Cobalt Based Magnetic Nanoparticles

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Cobalt-based Magnetic Nanoparticles

Author : Mehdi Zamanpour
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (9 download)

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Book Synopsis Cobalt-based Magnetic Nanoparticles by : Mehdi Zamanpour

Download or read book Cobalt-based Magnetic Nanoparticles written by Mehdi Zamanpour and published by . This book was released on 2014 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ever-increasing desire for more energy attainable from a smaller volume of matter has driven researchers to explore advanced materials at the molecular size. Magnetic materials at the nanometer size scale have been the subject of enormous research effort worldwide for more than half a century. Different magnetic nanoparticles have shown different behavior in the absence and presence of an external magnetic field, which has led them to be categorized as soft or hard magnets. Applications range from medical and biomedical devices to magnetic recording media and magnetic sensing have emphasized the importance of this class of materials. Soft magnetic phases have found application in power generation and magnetic targeted drug delivery, while hard magnets have been subject of extensive research for application as energy storage media. Discovery of the exchange-coupling phenomenon between two adjacent hard and soft magnetic phases has attracted scientists to develop advanced materials for energy storage with no usage of fossil fuels: clean energy. In this Dissertation, synthesis of pure phase, soft FeCo nanoparticles with high magnetic moment and hard phase CoxC nanoparticles possessing high coercivity is reported. The polyol method (chemical co-precipitating at polyhydric alcohol as reducing agent) is used to make FeCo and CoxC nanoparticles and the effects of important reaction kinetics parameters on the structure and magnetic properties of the products are studied. Careful analysis of correlations between these parameters and the properties of the magnetic particles has made synthesis of FeCo and CoxC nanoparticles with desired properties possible. Fabrication of MnAlC-FeCo heterostructures as a rare earth-free alternative for high-performance permanent magnet is also reported. To synthesize MnAlC-FeCo, mechanical alloying and dry mixing of MnAlC and FeCo nanoparticles are accomplished followed by annealing in a furnace. Overall, the achieved results in this work enable synthesis of high moment FeCo and high coercivity CoxC with desired structure and magnetic properties obtained through polyol method. In particular, this Dissertation provides the technique to fabricate cobalt carbide nanoparticles without using rare earth elements as a catalyst or as heterogeneous seed nuclei at any stage of the processing.

On the Influence of Nonuniform Magnetic Fields on Ferromagnetic Colloidal Sols

Author : S. Stephen Papell
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis On the Influence of Nonuniform Magnetic Fields on Ferromagnetic Colloidal Sols by : S. Stephen Papell

Download or read book On the Influence of Nonuniform Magnetic Fields on Ferromagnetic Colloidal Sols written by S. Stephen Papell and published by . This book was released on 1968 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis, Self-assembly, and Potential Applications of Cobalt-based Nanoparticles with Tailored Magnetic Properties

Author : Yuping Bao
Publisher :
ISBN 13 :
Total Pages : 350 pages
Book Rating : 4.:/5 (718 download)

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Book Synopsis Synthesis, Self-assembly, and Potential Applications of Cobalt-based Nanoparticles with Tailored Magnetic Properties by : Yuping Bao

Download or read book Synthesis, Self-assembly, and Potential Applications of Cobalt-based Nanoparticles with Tailored Magnetic Properties written by Yuping Bao and published by . This book was released on 2006 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Magnetic Nanoparticles for Biomedical Applications

Author : Martin F. Desimone
Publisher : Materials Research Forum LLC
ISBN 13 : 1644902338
Total Pages : 322 pages
Book Rating : 4.6/5 (449 download)

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Book Synopsis Magnetic Nanoparticles for Biomedical Applications by : Martin F. Desimone

Download or read book Magnetic Nanoparticles for Biomedical Applications written by Martin F. Desimone and published by Materials Research Forum LLC. This book was released on 2023-03-25 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic nanoparticles (MNPs) have many applications in the biomedical field because of their non-toxicity, high chemical stability, and biocompatibility. They are used in DNA or protein separation, hyperthermia, tissue engineering, magnetic resonance imaging, cancer therapy, drug delivery, bone and dental repair, biosensors, etc. The book focuses on magnetic nanoparticles and coated nanoparticles (ferrites nanoparticles, bimetallic-magnetic nanoparticles, magnetic fluid); their synthesis, characterization, and in vivo or in vitro biomedical applications. Keywords: Iron Oxide Magnetic Nanomaterials, Magnetic Spinel Ferrite Nanoparticles, Magnetic Oxide Nanoparticles, Ferromagnetic Nickel Nanostructures, Cobalt Ferrite with Niobium Pentoxide, Hyperthermia, Oncologic Magnetic Thermotherapy, Cancer Therapy, Cancer Diagnosis, Drug Delivery. Immune System Related Diseases.

Magnetic Nanoparticles

Author : Sergey P. Gubin
Publisher : John Wiley & Sons
ISBN 13 : 352762757X
Total Pages : 484 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Magnetic Nanoparticles by : Sergey P. Gubin

Download or read book Magnetic Nanoparticles written by Sergey P. Gubin and published by John Wiley & Sons. This book was released on 2009-11-18 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This interdisciplinary approach to the topic brings together reviews of the physics, chemistry, fabrication and application of magnetic nanoparticles and nanostructures within a single cover. With its discussion of the basics as well as the most recent developments, and featuring many examples of practical applications, the result is both a clear and concise introduction to the topic for beginners and a guide to relevant comprehensive physical phenomena and essential technological applications for experienced researchers.

The Stability and Oxidation Resistance of Iron- and Cobalt-Based Magnetic Nanoparticle Fluids Fabricated by Inert-Gas Condensation

Author : Nguyen H. Hai
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (742 download)

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Book Synopsis The Stability and Oxidation Resistance of Iron- and Cobalt-Based Magnetic Nanoparticle Fluids Fabricated by Inert-Gas Condensation by : Nguyen H. Hai

Download or read book The Stability and Oxidation Resistance of Iron- and Cobalt-Based Magnetic Nanoparticle Fluids Fabricated by Inert-Gas Condensation written by Nguyen H. Hai and published by . This book was released on 2005 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic nanoparticle fluids have numerous biomedical applications, including magnetic imaging, drug delivery, and hyperthermia treatment for cancer. Ideal magnetic nanoparticle fluids have well-separated, biocompatible nanoparticles with a small size distribution that form a stable colloid. We have combined inert-gas condensation, which produces nanoparticles with low polydispersity, with deposition directly into a surfactant-laden fluid to prevent agglomeration. Iron, cobalt, and iron-nitride nanoparticle fluids fabricated using inert-gas condensation have with mean particle sizes from 5-50 nm and remain stable over long periods of time. Iron and cobalt nanoparticles oxidize on exposure to air, with oxidation and corrosion resistant, while retaining the same high degree of colloidal stability. Magnetic properties vary depending on the nanoparticle size and material, but can be varied from superparamagnetic to ferromagnetic with coercivities on the order of 1000 Oe. In addition to future biomedical applications, inert-gas condensation into fluids offers the opportunity to study interparticle interactions over a broad range of intrinsic materials parameters and interparticle separations.

Magnetic Nanomaterials

Author :
Publisher : John Wiley & Sons
ISBN 13 : 3527321543
Total Pages : 673 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Magnetic Nanomaterials by :

Download or read book Magnetic Nanomaterials written by and published by John Wiley & Sons. This book was released on 2009-09-15 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book series Nanomaterials for the Life Sciences, provides an in-depth overview of all nanomaterial types and their uses in the life sciences. Each volume is dedicated to a specific material class and covers fundamentals, synthesis and characterization strategies, structure-property relationships and biomedical applications. The series brings nanomaterials to the Life Scientists and life science to the Materials Scientists so that synergies are seen and developed to the fullest. Written by international experts of various facets of this exciting field of research, the series is aimed at scientists of the following disciplines: biology, chemistry, materials science, physics, bioengineering, and medicine, together with cell biology, biomedical engineering, pharmaceutical chemistry, and toxicology, both in academia and fundamental research as well as in pharmaceutical companies. VOLUME 4 - Magnetic Nanomaterials This volume takes the reader on a tour showing how magnetic nanomaterials are used in the fields of diagnosis and therapy, as well as in tissue engineering and environmental applications.

Synthesis and Characterization of Cobalt Carbide Based Nanomaterials

Author : Zachary John Huba
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (879 download)

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Book Synopsis Synthesis and Characterization of Cobalt Carbide Based Nanomaterials by : Zachary John Huba

Download or read book Synthesis and Characterization of Cobalt Carbide Based Nanomaterials written by Zachary John Huba and published by . This book was released on 2014 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Permanent magnets are used heavily for multiple applications in industry and current electronic technologies. However, the current permanent landscape is muddled by high cost of materials and insufficient magnetic or thermal properties. The primary focus of this dissertation work is the synthesis and optimization of a new permanent magnetic material, in the form of cobalt carbide nanomaterials. The optimization revolved around controlling the crystal phase and particle shape of synthesized cobalt carbide particles; these parameters have significant impact on the observed magnetic properties of magnetic nanoparticles. Co3C was identified to be the preferred crystal phase, leading to better magnetic properties. Cobalt Fumarate was found to be the ideal precursor to synthesize anisotropic Co3C particles and enhance magnetic properties of the synthesized cobalt carbide particles. Lastly, an ethanol based reduction system was employed to develop the greener synthesis of Co and Ni magnetic particles.

New Trends in Nanoparticle Magnetism

Author : Davide Peddis
Publisher : Springer Nature
ISBN 13 : 303060473X
Total Pages : 445 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis New Trends in Nanoparticle Magnetism by : Davide Peddis

Download or read book New Trends in Nanoparticle Magnetism written by Davide Peddis and published by Springer Nature. This book was released on 2021-01-15 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides comprehensive coverage of the most recent progress and developments in the field of magnetic nanoparticles, with special emphasis on new materials design approaches for magnetic nanoarchitectures, advanced characterization techniques, and a wide range of applications areas including permanent magnets, biomedicine, and life sciences. The book also features an exhaustive section on fundamentals, covering single particle effects, surface effects, and interparticle interactions. The book delivers a strong focus throughout on the multidisciplinarity of the subject spanning physics, chemistry, engineering, biology, medicine, and environmental science. This forward-looking contributed volume highlights future perspectives and areas of emerging research, and will be of great interest to advanced undergraduates, as well as researchers in academia and industry.

Handbook of Magnetic Hybrid Nanoalloys and their Nanocomposites

Author : Sabu Thomas
Publisher : Springer Nature
ISBN 13 : 3030909484
Total Pages : 1278 pages
Book Rating : 4.0/5 (39 download)

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Book Synopsis Handbook of Magnetic Hybrid Nanoalloys and their Nanocomposites by : Sabu Thomas

Download or read book Handbook of Magnetic Hybrid Nanoalloys and their Nanocomposites written by Sabu Thomas and published by Springer Nature. This book was released on 2022-10-27 with total page 1278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference work satisfies the need for in-depth and multidisciplinary coverage of the current state of the art of magnetic hybrid nanoalloys (MHNAs) and their polymer and ceramic nanocomposites. MHNAs represent one of the most challenging research areas in modern science and technology. These materials are stiff and strong with remarkable electronic, mechanical, electrical, thermal and biocompatible properties, and a high potential for multifunctional applications ranging from industry to medicine. The peer-reviewed literature is already extensive, witnessing rapid progress in experimental and theoretical studies on fundamental properties as well as various advanced applications. Part 1 covers theory, modelling, and synthesis (growth and alloying mechanisms) of MHNAs. Formation mechanisms of magneto-electric multiferroic materials, magnetic carbon nanotube (CNTs), and perovskite materials, which are a novel class of next-generation multifunctional nanomaterials, are discussed. The second part focuses on characterization techniques for electrical and dielectrical, rheological, biocompatibility, and other properties, as well as applications in the industrial, agricultural, environmental, and biomedical sectors. Finally, life cycle assessment is considered as essential to the development of nanomaterials and nanoproducts from MHNAs. Advanced undergraduate and graduate students, researchers, and other professionals in the fields of materials science and engineering, polymer science, surface science, bioengineering, and chemical engineering will find comprehensive and authoritative information for solving fundamental and applied problems in the characterization and use of these multifunctional nanomaterials.

Magnetic Nanoparticles

Author : Fouad Sabry
Publisher : One Billion Knowledgeable
ISBN 13 :
Total Pages : 329 pages
Book Rating : 4.:/5 (661 download)

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Book Synopsis Magnetic Nanoparticles by : Fouad Sabry

Download or read book Magnetic Nanoparticles written by Fouad Sabry and published by One Billion Knowledgeable. This book was released on 2022-01-16 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: What Is Magnetic Nanoparticles Magnetic nanoparticles are a class of nanoparticle that can be manipulated using magnetic fields. Such particles commonly consist of two components, a magnetic material, often iron, nickel and cobalt, and a chemical component that has functionality. While nanoparticles are smaller than 1 micrometer in diameter, the larger microbeads are 0.5–500 micrometer in diameter. Magnetic nanoparticle clusters that are composed of a number of individual magnetic nanoparticles are known as magnetic nanobeads with a diameter of 50–200 nanometers. Magnetic nanoparticle clusters are a basis for their further magnetic assembly into magnetic nanochains. The magnetic nanoparticles have been the focus of much research recently because they possess attractive properties which could see potential use in catalysis including nanomaterial-based catalysts, biomedicine and tissue specific targeting, magnetically tunable colloidal photonic crystals, microfluidics, magnetic resonance imaging, magnetic particle imaging, data storage, environmental remediation, nanofluids, optical filters, defect sensor, magnetic cooling and cation sensors. How You Will Benefit (I) Insights, and validations about the following topics: Chapter 1: Magnetic nanoparticles Chapter 2: Nanoparticle Chapter 3: Coprecipitation Chapter 4: Thermal decomposition Chapter 5: Microemulsion Chapter 6: Iron oxide nanoparticle Chapter 7: Magnetic nanoparticles (II) Answering the public top questions about magnetic nanoparticles. (III) Real world examples for the usage of magnetic nanoparticles in many fields. (IV) 17 appendices to explain, briefly, 266 emerging technologies in each industry to have 360-degree full understanding of magnetic nanoparticles' technologies. Who This Book Is For Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of magnetic nanoparticles.

Synthesis of Magnetic Nanoparticles and Carbon Based Nanohybrid Materials for Biomedical and Energy Application

Author : Xiao Jie Liu
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (93 download)

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Book Synopsis Synthesis of Magnetic Nanoparticles and Carbon Based Nanohybrid Materials for Biomedical and Energy Application by : Xiao Jie Liu

Download or read book Synthesis of Magnetic Nanoparticles and Carbon Based Nanohybrid Materials for Biomedical and Energy Application written by Xiao Jie Liu and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis was focused on the synthesis of magnetic nanoparticles of iron oxide and cobalt oxide and core-shell nanoparticles, consisting of a cobalt oxide coated iron oxide and on the development of composite nanomaterials - nanostructures carbon /metal oxide nanoparticles - for applications in the biomedical field and the energy. For the synthesis of NPs, the shape and size of NPs are dependent of the reaction conditions, which further affect their magnetic properties. Meanwhile, simulation showed that stearate chains can desorb more easily from iron atoms and release to form seeds than from cobalt atoms, which might explain distinctive behavior between the bath complexes. Regarding nanostructures carbon/metal oxide nanoparticles hybrid materials, the properties of the filled magnetic CNTs as heat mediator for photothermal ablation and as contrast agent for MRI were then evaluated and promising results have been obtained. Last, new composite materials (Nb205 nanoparticles/graphene or NTCs) were synthesized and promising results were obtaines in lithium battery tests : their use as anode allowed obtaining reversible capacities of 260 mAh/g.

Green Nanoparticles

Author : Jayanta Kumar Patra
Publisher : Springer Nature
ISBN 13 : 3030392465
Total Pages : 395 pages
Book Rating : 4.0/5 (33 download)

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Book Synopsis Green Nanoparticles by : Jayanta Kumar Patra

Download or read book Green Nanoparticles written by Jayanta Kumar Patra and published by Springer Nature. This book was released on 2020-04-06 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology is the application of science to control matter at the molecular level. It has become one of the most promising applied technologies in all areas of science. Nanoparticles have multi-functional properties and have created very interesting applications in various fields such as medicine, nutrition, bioenergy, agriculture and the environment. But the biogenic syntheses of monodispersed nanoparticles with specific sizes and shapes have been a challenge in biomaterial science. Nanoparticles are of great interest due to their extremely small size and large surface-to-volume ratio, which lead to both chemical and physical differences in their properties (e.g., mechanical properties, biological and sterical properties, catalytic activity, thermal and electrical conductivity, optical absorption and melting point) compared to bulk of the same chemical composition. Recently, however, synthesizing metal nanoparticles using green technology via microorganisms, plants, viruses, and so on, has been extensively studied and has become recognized as a green and efficient way for further exploiting biological systems as convenient nanofactories. Thus the biological synthesis of nanoparticles is increasingly regarded as a rapid, ecofriendly, and easily scaled-up technology. Today researchers are developing new techniques and materials using nanotechnology that may be suitable for plants to boost their native functions. Recently, biological nanoparticles were found to be more pharmacologically active than physico-chemically synthesized nanoparticles. Various applications of biosynthesized nanoparticles have been discovered, especially in the field of biomedical research, such as applications to specific delivery of drugs, use for tumor detection, angiogenesis, genetic disease and genetic disorder diagnosis, photoimaging, and photothermal therapy. Further, iron oxide nanoparticles have been applied to cancer therapy, hyperthermia, drug delivery, tissue repair, cell labeling, targeting and immunoassays, detoxification of biological fluids, magnetic resonance imaging, and magnetically responsive drug delivery therapy. Nanoparticle synthesis for plant byproducts for biomedical applications has vast potential. This book offers researchers in plant science and biomedicine the latest research and opportunity to develop new tools for the synthesis of environmentally friendly and cost-effective nanoparticles for applications in biomedicine as well as other various fields.

Magnetic Nanoparticles in Human Health and Medicine

Author : Costica Caizer
Publisher : John Wiley & Sons
ISBN 13 : 1119754747
Total Pages : 512 pages
Book Rating : 4.1/5 (197 download)

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Book Synopsis Magnetic Nanoparticles in Human Health and Medicine by : Costica Caizer

Download or read book Magnetic Nanoparticles in Human Health and Medicine written by Costica Caizer and published by John Wiley & Sons. This book was released on 2021-09-08 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic Nanoparticles in Human Health and Medicine Explores the application of magnetic nanoparticles in drug delivery, magnetic resonance imaging, and alternative cancer therapy Magnetic Nanoparticles in Human Health and Medicine addresses recent progress in improving diagnosis by magnetic resonance imaging (MRI) and using non-invasive and non-toxic magnetic nanoparticles for targeted drug delivery and magnetic hyperthermia. Focusing on cancer diagnosis and alternative therapy, the book covers both fundamental principles and advanced theoretical and experimental research on the magnetic properties, biocompatibilization, biofunctionalization, and application of magnetic nanoparticles in nanobiotechnology and nanomedicine. Chapters written by a panel of international specialists in the field of magnetic nanoparticles and their applications in biomedicine cover magnetic hyperthermia (MHT), MRI contrast agents, biomedical imaging, modeling and simulation, nanobiotechnology, toxicity issues, and more. Readers are provided with accurate information on the use of magnetic nanoparticles in diagnosis, drug delivery, and alternative cancer therapeutics—featuring discussion of current problems, proposed solutions, and future research directions. Topics include current applications of magnetic iron oxide nanoparticles in nanomedicine and alternative cancer therapy: drug delivery, magnetic resonance imaging, superparamagnetic hyperthermia as alternative cancer therapy, magnetic hyperthermia in clinical trials, and simulating the physics of magnetic particle heating for cancer therapy. This comprehensive volume: Covers both general research on magnetic nanoparticles in medicine and specific applications in cancer therapeutics Discusses the use of magnetic nanoparticles in alternative cancer therapy by magnetic and superparamagnetic hyperthermia Explores targeted medication delivery using magnetic nanoparticles as a future replacement of conventional techniques Reviews the use of MRI with magnetic nanoparticles to increase the diagnostic accuracy of medical imaging Magnetic Nanoparticles in Human Health and Medicine is a valuable resource for researchers in the fields of nanomagnetism, magnetic nanoparticles, nanobiomaterials, nanobioengineering, biopharmaceuticals nanobiotechnologies, nanomedicine, and biopharmaceuticals, particularly those focused on alternative cancer diagnosis and therapeutics.

Magnetic Nanoparticles and Polymer Nanocomposites

Author : Imran Khan
Publisher : Elsevier
ISBN 13 : 032390341X
Total Pages : 636 pages
Book Rating : 4.3/5 (239 download)

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Book Synopsis Magnetic Nanoparticles and Polymer Nanocomposites by : Imran Khan

Download or read book Magnetic Nanoparticles and Polymer Nanocomposites written by Imran Khan and published by Elsevier. This book was released on 2024-03-21 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic Nanoparticles and Polymer Nanocomposites: Fundamentals and Biological, Environmental and Energy Applications focuses on the manufacturing and design of innovative magnetic polymeric nanocomposite materials for a broad range of different applications. These materials have truly outstanding and sustainable properties unlike other composites because they are combined with both organic (polymer matrix) and inorganic (semiconductor nanoparticles) materials to form a sustainable composite material. The book's focus is on magnetic semiconductor and polymer nanocomposites made from bioresorbable and biocompatible polymers, modified with magnetic nanoparticles. This book provides detailed knowledge on the modern research application of magnetic semiconductor and polymeric nanocomposites that have tremendous commercial value. In addition, these nanocomposite materials are also a good source for the renewable energy-based industry. Covers magnetic nanoparticles and polymer nanocomposites in environmental, renewable energy, water treatment, energy storage and biomedical applications Provides fundamental knowledge on design, synthesis, properties investigation, applications and manufacturing Emphasizes recent advances on magnetic nanoparticles and polymer nanocomposites

A Study of Manganese and Cobalt Incorporated Nickel Oxide Based Core-shell Magnetic Nanoparticles

Author : Samiul Hasan
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis A Study of Manganese and Cobalt Incorporated Nickel Oxide Based Core-shell Magnetic Nanoparticles by : Samiul Hasan

Download or read book A Study of Manganese and Cobalt Incorporated Nickel Oxide Based Core-shell Magnetic Nanoparticles written by Samiul Hasan and published by . This book was released on 2017 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis along with the structural and magnetic properties of manganese (Mn) and cobalt (Co) -incorporated nickel oxide (NiO) inverted core-shell nanoparticles (CSNs) were investigated. The primary objective of this study was to determine the effect of substitution of nickel (Ni) by transition metal ions (Mn2+/Co2+) in affecting the magnetic properties of the resultant CSNs. The core of the CSNs is comprised of NiO and the shell constitutes a Nix(Mn/Co)1-xO phase. The synthesis of the CSNs was accomplished in two steps: first, NiO nanoparticles were synthesized using a thermal decomposition method. In the second step, our hydrothermal nanophase epitaxy method was used to create the core-shell structure. Rietveld refinement of X-ray diffraction (XRD) data show rock salt structure throughout in the Mn/Co incorporated CSNs. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images show a combination of pseudo-spherical and faceted shapes of CSNs whereas energy dispersive spectroscopy (EDS) indicates transition metal incorporation in the CSNs. The high-resolution (HR) TEM images confirmed the formation of distinct core and shell regions. Magnetic characterization shows that the Mn- and Co-substituted nickel oxide-based CSNs possess an inverted magnetic structure, with an antiferromagnetic core and a ferro- or ferrimagnetic shell. The coercivity and exchange bias properties are of larger magnitude in Mn-incorporated than in Co-incorporated CSNs.

The Cobalt Oxide-Based Composite Nanomaterial Synthesis and Its Biomedical and Engineering Applications

Author : Syam Sundar Lingala
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)

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Book Synopsis The Cobalt Oxide-Based Composite Nanomaterial Synthesis and Its Biomedical and Engineering Applications by : Syam Sundar Lingala

Download or read book The Cobalt Oxide-Based Composite Nanomaterial Synthesis and Its Biomedical and Engineering Applications written by Syam Sundar Lingala and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The magnetic nanoparticles (NPs) are offering a wide range of applications in medical and engineering fields. Among all the magnetic nanoparticles, cobalt oxide (Co3O4) nanoparticles and its composite-based nanoparticles are attracting more interest from researchers because of its unique mechanical, thermal, and magnetic properties. The aim of this book is to bring together a number of recent contributions regarding the cobalt oxide-based composite nanoparticles from several researchers all over the world. The latest research results, innovations, and methodologies are reported in the book in order to support the discussion and to circulate ideas and knowledge about the applications of these materials in medical and engineering applications. This chapter presents the methodology for the synthesis and characterization and applications of cobalt oxide-based composite nanoparticles. The detailed analysis related to toxicity of these nanocomposite materials is also included in this book chapter.