Unconventional Magnetism In Bulk And Nanostructured Semiconductors

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Unconventional Magnetism in Bulk and Nanostructured Semiconductors

Author : Pratibha Dev
Publisher :
ISBN 13 :
Total Pages : 173 pages
Book Rating : 4.:/5 (639 download)

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Book Synopsis Unconventional Magnetism in Bulk and Nanostructured Semiconductors by : Pratibha Dev

Download or read book Unconventional Magnetism in Bulk and Nanostructured Semiconductors written by Pratibha Dev and published by . This book was released on 2009 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this thesis is to understand the unconventional magnetism (also known as sp/d0 magnetism) exhibited by certain bulk and nano-structured semiconductors and insulators, that are not intentionally doped with magnetic elements. The common features in most experiments reporting d0 magnetism are the presence of defects and 2nd row elements. This indicates that defects play an important role in inducing and mediating magnetism in these materials. As the acceptor and acceptor-like defect levels (or example, those created by the cation vacancies) are derived from the fairly localized 2p states of the 2nd row elements, such defects can result in local moment formation. Depending on the range and strength of the exchange interactions between the localized moments, one might obtain macroscopic magnetism in such defective semiconductors and insulators.^A microscopic understanding of the mechanism(s) responsible for the observed behavior is important, not only as an academic pursuit, but also for the use of this property in creating future dilute magnetic semiconductors. To this end, systematic first principle electronic-structure calculations were carried out in bulk Gallium Nitride, Boron Nitride and Zinc Oxide. Acceptor-like defects, such as cation vacancies, cation substitutional and larger defect-complexes were introduced in the otherwise perfect crystals. The magnetic properties of the resulting structure were investigated as a function of defect's charge state and inter-defect distances. The calculations for defects in semiconductors were carried out using supercell geometries within density functional theory. An exchange mechanism is proposed to explain the magnetic interaction between the defect-induced magnetic moments. The role of defects in inducing magnetism in nanostructures was also studied.^The calculations were carried out for the GaN and ZnO nanowires and are presented in this thesis.

Nanostructured Semiconductors

Author : Serge Zhuiykov
Publisher : Woodhead Publishing
ISBN 13 : 0081019203
Total Pages : 568 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Nanostructured Semiconductors by : Serge Zhuiykov

Download or read book Nanostructured Semiconductors written by Serge Zhuiykov and published by Woodhead Publishing. This book was released on 2018-01-02 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured Semiconductors focuses on the development of semiconductor nanocrystals, their technologies and applications, including energy harvesting, solar cells, solid oxide fuel cells, and chemical sensors. Semiconductor oxides are used in electronics, optics, catalysts, sensors, and other functional devices. In their 2D form, the reduction in size confers exceptional properties, useful for creating faster electronics and more efficient catalysts. Since the first edition of the book, there has been significant progress in the development of new functional nanomaterials with unique and sometimes unpredictable quantum-confined properties within the class what it called two-dimensional (2D) semiconductors. These nanocrystals represent extremely thin nano-structures with thickness of just few nano-meters. Since that time, not only were 2D semiconductor oxides further developed, more importantly, 2D metal dichalcogenides, such as MoS2, MoSe2, WS2, WSe2 and others also progressed significantly in their development demonstrating their superior properties compared to their bulk and microstructural counterparts. The book has been expanded to include these advancements. The book begins with the structure and properties of semiconductor nanocrystals (chapter 1), addresses electronic device applications (chapter 2), discusses 2-Dimensional oxides and dichalcogenide semiconductors (chapters 3 through 5), and ends with energy, environment, and bio applications (chapters 6 through 8). - Focuses on the development of semiconductor nanocrystals and their technologies and applications, including energy harvesting, solar cells, solid oxide fuel cells and chemical sensors - Include other 2D materials, such as dichalcogenides to present a comprehensive resource on the latest advancements in nanostructured semiconductors - Reviews the fundamental physics of conductivity and electron arrangement before proceeding to practical applications - Contains a unique chapter dedicated to the new atomic layer deposition (ALD) technique which has the ability to develop 2D nanostructures with great precision

Nanostructured Semiconductors

Author : Konstantinos Termentzidis
Publisher : CRC Press
ISBN 13 : 9814745650
Total Pages : 574 pages
Book Rating : 4.8/5 (147 download)

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Book Synopsis Nanostructured Semiconductors by : Konstantinos Termentzidis

Download or read book Nanostructured Semiconductors written by Konstantinos Termentzidis and published by CRC Press. This book was released on 2017-09-01 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is devoted to nanostructures and nanostructured materials containing both amorphous and crystalline phases with a particular focus on their thermal properties. It is the first time that theoreticians and experimentalists from different domains gathered to treat this subject. It contains two distinct parts; the first combines theory and simulations methods with specific examples, while the second part discusses methods to fabricate nanomaterials with crystalline and amorphous phases and experimental techniques to measure the thermal conductivity of such materials. Physical insights are given in the first part of the book, related with the existing theoretical models and the state of art simulations methods (molecular dynamics, ab-initio simulations, kinetic theory of gases). In the second part, engineering advances in the nanofabrication of crystalline/amorphous heterostructures (heavy ion irradiation, electrochemical etching, aging/recrystallization, ball milling, PVD, laser crystallization and magnetron sputtering) and adequate experimental measurement methods are analyzed (Scanning Thermal Microscopy, Raman, thermal wave methods and x-rays neutrons spectroscopy).

Nanostructured Magnetic Materials and Their Applications

Author : Bekir Aktas
Publisher : Springer Science & Business Media
ISBN 13 : 9781402020049
Total Pages : 478 pages
Book Rating : 4.0/5 (2 download)

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Book Synopsis Nanostructured Magnetic Materials and Their Applications by : Bekir Aktas

Download or read book Nanostructured Magnetic Materials and Their Applications written by Bekir Aktas and published by Springer Science & Business Media. This book was released on 2004-07-27 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Istanbul, Turkey, 1-4 July 2003

Nanomagnetism And Spintronics: Fabrication, Materials, Characterization And Applications

Author : Farzad Nasirpouri
Publisher : World Scientific
ISBN 13 : 9814468029
Total Pages : 401 pages
Book Rating : 4.8/5 (144 download)

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Book Synopsis Nanomagnetism And Spintronics: Fabrication, Materials, Characterization And Applications by : Farzad Nasirpouri

Download or read book Nanomagnetism And Spintronics: Fabrication, Materials, Characterization And Applications written by Farzad Nasirpouri and published by World Scientific. This book was released on 2010-12-21 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spintronics manipulates individual magnetic moments to integrate logic functions and non-volatile information storage on the same platform. As is often the case in condensed matter science, advances are made through the synthesis of novel materials and high quality new physics materials. Giant magnetoresistance and dilute magnetic semiconductors are two such examples. However, the remarkable potential of spintronics for quantum computation faces major challenges when it comes to controlling simultaneously several qbits encoded in magnetic moments.After a brief introduction to concepts in nanomagnetism and spintronics, the text reviews recent techniques and their achievements in the synthesis and fabrication of magnetic nanostructures. The methods presented here emphasize bottom up or top down approaches for nanodots, nanowires and thin films. They include: focused ion beam irradiation, electron beam-induced chemical vapour deposition, chemical, and electrochemical methods. The later part of the book reviews magnetoelectric materials, the giant magnetoresistance in magnetic superlattices, dynamics effects in spin transfer torque oscillators, dilute magnetic oxides, rare earth nitrides with nuclear resonance scattering, and Mössbauer spectroscopy in spintronics. Finally, the last part of this book discusses applications to magnetic storage and bio-magnetism.Nanomagnetism and Spintronics will be useful to graduate students and researchers and engineers in the field of nanoscience.

Chemical Physics of Nanostructured Semiconductors

Author : Alexander I. Kokorin
Publisher : CRC Press
ISBN 13 : 1498708633
Total Pages : 264 pages
Book Rating : 4.4/5 (987 download)

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Book Synopsis Chemical Physics of Nanostructured Semiconductors by : Alexander I. Kokorin

Download or read book Chemical Physics of Nanostructured Semiconductors written by Alexander I. Kokorin and published by CRC Press. This book was released on 2003-07-31 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep and detailed discussions on chemistry, chemical physics, photoelectrochemistry, photophysics, photocatalysis and possible applications of nanostructured semiconductor materials have shown increasing interest in the matter by scientists representing various research areas as well as industrial enterprises. Indeed, solar energy conversion and ch

Optoelectronic and Spin-related Properties of Semiconductor Nanostructures in Magnetic Fields

Author : Till Andlauer
Publisher :
ISBN 13 : 9783941650053
Total Pages : 157 pages
Book Rating : 4.6/5 (5 download)

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Book Synopsis Optoelectronic and Spin-related Properties of Semiconductor Nanostructures in Magnetic Fields by : Till Andlauer

Download or read book Optoelectronic and Spin-related Properties of Semiconductor Nanostructures in Magnetic Fields written by Till Andlauer and published by . This book was released on 2009 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Magnetic Resonance of Semiconductors and Their Nanostructures

Author : Pavel G. Baranov
Publisher : Springer
ISBN 13 : 9783709148785
Total Pages : 0 pages
Book Rating : 4.1/5 (487 download)

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Book Synopsis Magnetic Resonance of Semiconductors and Their Nanostructures by : Pavel G. Baranov

Download or read book Magnetic Resonance of Semiconductors and Their Nanostructures written by Pavel G. Baranov and published by Springer. This book was released on 2018-05-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains different magnetic resonance (MR) techniques and uses different combinations of these techniques to analyze defects in semiconductors and nanostructures. It also introduces novelties such as single defects MR and electron-paramagnetic-resonance-based methods: electron spin echo, electrically detected magnetic resonance, optically detected magnetic resonance and electron-nuclear double resonance – the designated tools for investigating the structural and spin properties of condensed systems, living matter, nanostructures and nanobiotechnology objects. Further, the authors address problems existing in semiconductor and nanotechnology sciences that can be resolved using MR, and discuss past, current and future applications of MR, with a focus on advances in MR methods. The book is intended for researchers in MR studies of semiconductors and nanostructures wanting a comprehensive review of what has been done in their own and related fields of study, as well as future perspectives.

Ultrathin Magnetic Structures III

Author : J.A.C. Bland
Publisher : Springer
ISBN 13 : 9783540219538
Total Pages : 318 pages
Book Rating : 4.2/5 (195 download)

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Book Synopsis Ultrathin Magnetic Structures III by : J.A.C. Bland

Download or read book Ultrathin Magnetic Structures III written by J.A.C. Bland and published by Springer. This book was released on 2004-12-13 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to understand and control the unique properties of interfaces has created an entirely new field of magnetism which already has a profound impact in technology and is providing the basis for a revolution in electronics. The last decade has seen dramatic progress in the development of magnetic devices for information technology but also in the basic understanding of the physics of magnetic nanostructures. This volume describes thin film magnetic properties and methods for characterising thin film structure topics that underpin the present 'spintronics' revolution in which devices are based on combined magnetic materials and semiconductors. Volume IV deals with the fundamentals of spintronics: magnetoelectronic materials, spin injection and detection, micromagnetics and the development of magnetic random access memory based on GMR and tunnel junction devices. Together these books provide readers with a comprehensive account of an exciting and rapidly developing field. The treatment is designed to be accessible both to newcomers and to experts already working in this field who would like to get a better understanding of this very diversified area of research.

From Bulk to Nano

Author : Carmen-Gabriela Stefanita
Publisher : Springer Science & Business Media
ISBN 13 : 3540705481
Total Pages : 188 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis From Bulk to Nano by : Carmen-Gabriela Stefanita

Download or read book From Bulk to Nano written by Carmen-Gabriela Stefanita and published by Springer Science & Business Media. This book was released on 2008-09-24 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inspiration for this book can be traced back many years to two major works that in?uenced the author’s outlook on applied physics: FerromagnetismusbyR. Becker,W. D ̈ oring (Springer, Berlin 1939), and Ferromagnetism by R. M. Bozorth (IEEE Press, New York 1951). The former work is a collection of lectures held in the 1930s for ‘technicians’ attending a technical college. The German language in which the work was originally written was extremely convenient for the author of this present book, as it was for a long time the only comfortable technical language in an English speaking environment. Later on, upon encountering the work by Bozorth, it was a relief to see the clarity and eloquence of the subjects presented in English, despite the impressive thickness of the book. Bozorth’s work still constitutes a practical review for anyone in a multidisciplinary industry who comes across the various manifestations of magnetism. The popularity of both works is so enduring that they are regarded as highly academic, and yet extremely readable, a reference in their own right, still attracting many readers these days in industry and academia. The ?eld of magnetism progressed immensely in the twentieth century, and shows no signs of slowing down in the present one. It has become so vast that it is quite often viewed only in its parts, rather than as a whole. In today’smyriadofapplications,especiallyonananoscale,andtheirchangeable implications mostly on a macroscale, it often seems that di?erent aspects of reported work on magnetism are scattered and unrelated.

Investigation of Magnetic Materials and Semiconductor Nanostructures by Electron Holography

Author : Changlin Zheng
Publisher :
ISBN 13 : 9783869551494
Total Pages : 179 pages
Book Rating : 4.5/5 (514 download)

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Book Synopsis Investigation of Magnetic Materials and Semiconductor Nanostructures by Electron Holography by : Changlin Zheng

Download or read book Investigation of Magnetic Materials and Semiconductor Nanostructures by Electron Holography written by Changlin Zheng and published by . This book was released on 2009 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Einstein Relation in Compound Semiconductors and Their Nanostructures

Author : Kamakhya Prasad Ghatak
Publisher : Springer Science & Business Media
ISBN 13 : 354079557X
Total Pages : 471 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis Einstein Relation in Compound Semiconductors and Their Nanostructures by : Kamakhya Prasad Ghatak

Download or read book Einstein Relation in Compound Semiconductors and Their Nanostructures written by Kamakhya Prasad Ghatak and published by Springer Science & Business Media. This book was released on 2008-11-16 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing only on the Einstein relation in compound semiconductors and their nanostructures, this book deals with open research problems from carbon nanotubes to quantum wire superlattices with different band structures, and other field assisted systems.

Alternative Energies and Efficiency Evaluation

Author : Muhammad Wakil Shahzad
Publisher : BoD – Books on Demand
ISBN 13 : 1839698276
Total Pages : 328 pages
Book Rating : 4.8/5 (396 download)

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Book Synopsis Alternative Energies and Efficiency Evaluation by : Muhammad Wakil Shahzad

Download or read book Alternative Energies and Efficiency Evaluation written by Muhammad Wakil Shahzad and published by BoD – Books on Demand. This book was released on 2022-11-30 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global energy demand is expected to grow 47% by 2050, with oil remaining the number one source of energy. Renewables make up 27% of the global energy mix, as predicted by the International Energy Agency (IEA). To achieve IEA’s 2050 Net Zero targets, the electricity sector needs to reduce global emissions by nearly three-quarters. Even though renewables installations are expanding quickly, there is not enough to satisfy a strong rebound in global electricity demand. This will result in a sharp rise in the use of fossil fuel electricity generation that risks pushing carbon dioxide emissions. This book presents a comprehensive overview of energy efficiency, alternative energy resources, and process optimization for future sustainability.

Advances in Research and Applications: Semiconductor Heterostructures and Nanostructures

Author :
Publisher : Academic Press
ISBN 13 : 0080865089
Total Pages : 465 pages
Book Rating : 4.0/5 (88 download)

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Book Synopsis Advances in Research and Applications: Semiconductor Heterostructures and Nanostructures by :

Download or read book Advances in Research and Applications: Semiconductor Heterostructures and Nanostructures written by and published by Academic Press. This book was released on 1991-05-01 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: The explosion of the science of mesoscopic structures is having a great impact on physics and electrical engineering because of the possible applications of these structures in microelectronic and optoelectronic devices of the future. This volume of Solid State Physics consists of two comprehensive and authoritative articles that discuss most of the physical problems that have so far been identified as being of importance in semiconductor nanostructures. Much of the volume is tutorial in characture--while at the same time time presenting current and vital theoretical and experimental results and a copious reference list--so it will be essential reading to all those taking a part in the research and development of this emerging technology.

Nanobiomaterials

Author : Jorddy Neves Cruz
Publisher : Materials Research Forum LLC
ISBN 13 : 1644902362
Total Pages : 335 pages
Book Rating : 4.6/5 (449 download)

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Book Synopsis Nanobiomaterials by : Jorddy Neves Cruz

Download or read book Nanobiomaterials written by Jorddy Neves Cruz and published by Materials Research Forum LLC. This book was released on 2023-06-05 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a comprehensive overview of the synthesis, characterization and potential applications of nanobiomaterials. Emphasis is placed on antimicrobial action, bone regeneration, wound treatment, cancer diagnosis, environmental cleanup and the ethical considerations of nanomedicine. Keywords: Nanomaterials, Green Chemistry, Synthesis of Nanoparticles, Characterization of Silver Nanoparticles, Antimicrobial Action, Bone Regeneration, Wound Treatment, Molecular Targets, Cancer Diagnosis, Environmental Clean-up, Ethics of Nanomedicine.

Ferrite Nanostructured Magnetic Materials

Author : Jitendra Pal Singh
Publisher : Woodhead Publishing
ISBN 13 : 012823718X
Total Pages : 928 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Ferrite Nanostructured Magnetic Materials by : Jitendra Pal Singh

Download or read book Ferrite Nanostructured Magnetic Materials written by Jitendra Pal Singh and published by Woodhead Publishing. This book was released on 2023-04-28 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferrite Nanostructured Magnetic Materials: Technologies and Applications provides detailed descriptions of the physical properties of ferrite nanoparticles and thin films. Synthesis methods and their applications in numerous fields are also included. And, since characterization methods play an important role in investigating the materials' phenomena, various characterization tools applied to ferrite materials are also discussed. To meet the requirements of next-generation characterization tools in the field of ferrite research, synchrotron radiation-based spectroscopic and imaging tools are thoroughly explored.Finally, the book discusses current and emerging applications of ferrite nanostructured materials in industry, health, catalytic and environmental fields, making this comprehensive resource suitable for researchers and practitioners in the disciplines of materials science and engineering, chemistry and physics. - Reviews the fundamentals of ferrite materials, including their magnetic, electrical, dielectric and optical properties - Includes discussions on the most relevant and emerging synthesis and optimization of ferrite nanostructured materials for a diverse range of morphologies - Provides an overview of both the most relevant and emerging applications of ferrite magnetic materials in industry, health, energy and environmental remediation

Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials

Author : Sekhar Chandra Ray
Publisher : Elsevier
ISBN 13 : 0128176814
Total Pages : 241 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials by : Sekhar Chandra Ray

Download or read book Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials written by Sekhar Chandra Ray and published by Elsevier. This book was released on 2020-01-15 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials offers coverage of electronic structure, magnetic properties and their spin injection, and the transport properties of DLC, graphene, graphene oxide, carbon nanotubes, fullerenes, and their different composite materials. This book is a valuable resource for those doing research or working with carbon and carbon-related nanostructured materials for electronic and magnetic devices. Carbon-based nanomaterials are promising for spintronic applications because their weak spin-orbit (SO) coupling and hyperfine interaction in carbon atoms entail exceptionally long spin diffusion lengths (~100μm) in carbon nanotubes and graphene. The exceptional electronic and transport features of carbon nanomaterials could be exploited to build multifunctional spintronic devices. However, a large spin diffusion length comes at the price of small SO coupling, which limits the possibility of manipulating electrons via an external applied field. - Assesses the relative utility of a variety of carbon-based nanomaterials for spintronics applications - Analyzes the specific properties that make carbon and carbon nanostructured materials optimal for spintronics and magnetic applications - Discusses the major challenges to using carbon nanostructured materials as magnetic agents on a mass scale