Pressure Induced Phase Transitions In Ab2x4 Chalcogenide Compounds

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Pressure-Induced Phase Transitions in AB2X4 Chalcogenide Compounds

Author : Francisco Javier Manjon
Publisher : Springer
ISBN 13 : 9783662521892
Total Pages : 0 pages
Book Rating : 4.5/5 (218 download)

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Book Synopsis Pressure-Induced Phase Transitions in AB2X4 Chalcogenide Compounds by : Francisco Javier Manjon

Download or read book Pressure-Induced Phase Transitions in AB2X4 Chalcogenide Compounds written by Francisco Javier Manjon and published by Springer. This book was released on 2016-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book on pressure-induced phase transitions in AB2X4 chalcogenide compounds deals with one important AmBnXp material. The interest in these materials is caused by their properties. The results are discussed for three main groups of structural families: cubic-spinel structures, defective tetragonal structures, and other structures like layered and wurtzite-type modifications. A systematic analysis of the behavior of cubic (spinel), tetragonal (defect chalcopyrites and stannites) and other crystal modifications of AB2X4 compounds under hydrostatic pressure is performed. The behavior of AIIAl2S4, AIIGa2S4, AIIAl2Se4 and AIIGa2Se4 compounds with defective tetragonal structures, compounds with layered and wurtzite structures under hydrostatic pressure and the pressure dependence of the band gap, lattice parameters, interatomic distances, vibrational modes and pressure-induced phase transitions is discussed. Many of these compounds, except oxide spinels, undergo a pressure-induced phase transition towards the rocksalt-type structure. The phase transition is preceded by disorder in the cation sublattice. The dependence of the transition pressure to the rocksalt-type structure as a function of the compound ionicity and the size criterion is analyzed. At high pressures, all ordered-vacancy compounds are found to exhibit a band anticrossing between several conduction bands that leads to a strong decrease of its pressure coefficient and consequently to a strong non-linear pressure dependence of the direct bandgap energy. Theoretical studies of phase transitions in several ordered-vacancy compounds reveal that the existence of ordered vacancies alter the cation-anion bond distances and their compressibilities. The book is written for students, Ph D. students and specialists in materials science, phase transitions and new materials.

Pressure-Induced Phase Transitions in AB2X4 Chalcogenide Compounds

Author : Francisco Javier Manjon
Publisher : Springer Science & Business Media
ISBN 13 : 3642403670
Total Pages : 248 pages
Book Rating : 4.6/5 (424 download)

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Book Synopsis Pressure-Induced Phase Transitions in AB2X4 Chalcogenide Compounds by : Francisco Javier Manjon

Download or read book Pressure-Induced Phase Transitions in AB2X4 Chalcogenide Compounds written by Francisco Javier Manjon and published by Springer Science & Business Media. This book was released on 2014-01-21 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book on pressure-induced phase transitions in AB2X4 chalcogenide compounds deals with one important AmBnXp material. The interest in these materials is caused by their properties. The results are discussed for three main groups of structural families: cubic-spinel structures, defective tetragonal structures, and other structures like layered and wurtzite-type modifications. A systematic analysis of the behavior of cubic (spinel), tetragonal (defect chalcopyrites and stannites) and other crystal modifications of AB2X4 compounds under hydrostatic pressure is performed. The behavior of AIIAl2S4, AIIGa2S4, AIIAl2Se4 and AIIGa2Se4 compounds with defective tetragonal structures, compounds with layered and wurtzite structures under hydrostatic pressure and the pressure dependence of the band gap, lattice parameters, interatomic distances, vibrational modes and pressure-induced phase transitions is discussed. Many of these compounds, except oxide spinels, undergo a pressure-induced phase transition towards the rocksalt-type structure. The phase transition is preceded by disorder in the cation sublattice. The dependence of the transition pressure to the rocksalt-type structure as a function of the compound ionicity and the size criterion is analyzed. At high pressures, all ordered-vacancy compounds are found to exhibit a band anticrossing between several conduction bands that leads to a strong decrease of its pressure coefficient and consequently to a strong non-linear pressure dependence of the direct bandgap energy. Theoretical studies of phase transitions in several ordered-vacancy compounds reveal that the existence of ordered vacancies alter the cation-anion bond distances and their compressibilities. The book is written for students, Ph D. students and specialists in materials science, phase transitions and new materials.

Nanohybrids in Environmental & Biomedical Applications

Author : Surender Kumar Sharma
Publisher : CRC Press
ISBN 13 : 1351256831
Total Pages : 396 pages
Book Rating : 4.3/5 (512 download)

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Book Synopsis Nanohybrids in Environmental & Biomedical Applications by : Surender Kumar Sharma

Download or read book Nanohybrids in Environmental & Biomedical Applications written by Surender Kumar Sharma and published by CRC Press. This book was released on 2019-07-09 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterostructured nanoparticles have the capability for a broad range of novel and enhanced properties, which leads to appealing biomedical and environmental applications. This timely new book addresses the design and preparation of multiphase nanomaterials with desired size, shape, phase composition, and crystallinity, as well as their current applications. It emphasizes key examples to motivate deeper studies, including nanomaterial-based hyperthermia treatment of cancer, nanohybrids for water purification, nanostructures used in the removal or detection of bioagents from waste water, and so on. Features Presents state of the art research on heterostructured nanomaterials, from their synthesis and physiochemical properties to current environmental and biological applications. Includes details on toxicity and risk assessment of multifunctional nanomaterials. Discusses recent developments and utilization in healthcare by leading experts. Introduces the main features of functionalization of nanomaterials in terms of desired size, shape, phase composition, surface functionalization/coating, toxicity, and geometry. Emphasizes practical applications in the environmental and biomedical sectors.

Structural investigations on some oxides and other chalcogenide...

Author : Coenraad Jozef Maria Rooymans
Publisher :
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (26 download)

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Book Synopsis Structural investigations on some oxides and other chalcogenide... by : Coenraad Jozef Maria Rooymans

Download or read book Structural investigations on some oxides and other chalcogenide... written by Coenraad Jozef Maria Rooymans and published by . This book was released on 19?? with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Pressure-Induced Phase Transformations (Volume II)

Author : Daniel Errandonea
Publisher : Mdpi AG
ISBN 13 : 9783036585642
Total Pages : 0 pages
Book Rating : 4.5/5 (856 download)

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Book Synopsis Pressure-Induced Phase Transformations (Volume II) by : Daniel Errandonea

Download or read book Pressure-Induced Phase Transformations (Volume II) written by Daniel Errandonea and published by Mdpi AG. This book was released on 2023-08-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of phase transitions in materials under high pressure and high temperature is a very active research field. In the last few decades, many important discoveries have been made thanks to the development of experimental techniques and computer simulation methods. Many of these achievements affect various research fields ranging from solid-state physics, chemistry, and materials science to geophysics. They not only involve deepening knowledge on solid-solid phase transitions, but also a better understanding of melting under compression. These modern discoveries, as well as the impact of pressure on structural, chemical, and physical properties, are central to the current Special Issue. Amongst other topics, it places particular emphasis on phase transitions and their effects on different physical properties.

Dependance of Pressure Induced Phase Transition of Mercury Chalcogenides on Nearest Neighbors' Distance

Author : S. Bhattacharya
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (744 download)

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Book Synopsis Dependance of Pressure Induced Phase Transition of Mercury Chalcogenides on Nearest Neighbors' Distance by : S. Bhattacharya

Download or read book Dependance of Pressure Induced Phase Transition of Mercury Chalcogenides on Nearest Neighbors' Distance written by S. Bhattacharya and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Pressure-Induced Phase Transformations

Author : Daniel Errandonea
Publisher :
ISBN 13 : 9783039368167
Total Pages : 224 pages
Book Rating : 4.3/5 (681 download)

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Book Synopsis Pressure-Induced Phase Transformations by : Daniel Errandonea

Download or read book Pressure-Induced Phase Transformations written by Daniel Errandonea and published by . This book was released on 2020-09-04 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue of Crystals entitled Pressure-Induced Phase Transformations. It includes selected articles on the behavior of matter under high-pressure and high-temperature conditions, describing and discussing contemporary achievements, which were selected based on their relevance and scientific quality.

Pressure-induced Phase Transitions in Select Molybdates and Tungstates

Author : Paul Robert Scott
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (857 download)

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Book Synopsis Pressure-induced Phase Transitions in Select Molybdates and Tungstates by : Paul Robert Scott

Download or read book Pressure-induced Phase Transitions in Select Molybdates and Tungstates written by Paul Robert Scott and published by . This book was released on 2013 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mao-Bell and symmetric diamond anvil cells were used to study the effect of high-pressure on a series of tungstate and molybdate compounds. The experimental techniques of powder x-ray diffraction and Raman spectroscopy were employed to gain an understanding of the observed phase transitions. Bi2MoO6, exhibited a phase transition at ~6.8 GPa that was observed by a stiffening of its bulk modulus from 51 GPa, for the low-pressure phase, to 141.5 GPa for the high-pressure phase. Bi2W2O9 exhibited a phase transition at ~11 GPa that was observed by a change in the x-ray diffraction pattern. Bi2WO6 exhibited a phase transition between ~4.8 GPa and 8.3 GPa that was observed by a stiffening of its bulk modulus from 52.2 GPa, for the low-pressure phase, to 121.8 GPa for the high-pressure phase. La2Mo4O15 exhibited two phase transitions one at 2 GPa and another at 17 GPa. The transition at 2 GPa was observed as a change in the x-ray diffraction pattern and has yet to be identified. The transition at 17 GPa was to a glassy, pressure-induced amorphization, state. Sm2Mo4O15 exhibited a phase transition at 5.4 GPa. This transition was observed as a change in the x-ray diffraction pattern and has yet to be identified. MgNb2O6 exhibited a phase transition at 10.3 GPa. This transition was observed in both x-ray diffraction and Raman spectroscopy. KNbW2O9 exhibited no signs of a phase change up to a pressure of 35 GPa.

Pressure Induced Quantum Phase Transitions

Author : Di Tian
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (133 download)

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Book Synopsis Pressure Induced Quantum Phase Transitions by : Di Tian

Download or read book Pressure Induced Quantum Phase Transitions written by Di Tian and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum phase transitions are among the most intriguing topics in modern condensed matter physics. Interesting physical phenomena usually emerge in the vicinity of quantum critical points, making the investigation of such quantum systems particularly rewarding. In this thesis we present studies related to quantum phase transitions in two compounds, FBBO and Sr3Ru2O7, using hydrostatic pressure as the tuning parameter. Pressure is an ideal parameter to tune the strength of various interactions within the sample by changing the lattice constants, but is known to be very challenging to apply experimentally. Therefore a major effort of my PhD is to find out a consistent and systematic approach to prepare such experiments. FBBO is a neutral organic radical that has been carefully designed to be as metallic as possible at ambient pressure. Nevertheless it is still insulating, and high pressure was required in order to drive this system through the metal-insulator transition. Here, I present strong evidence of the formation of a Fermi liquid ground state under 6.2 GPa [1]. This is the first such observation for a neutral organic radical, after being proposed for decades. In the approach to metallization, we also found intriguing evidence of a low temperature magnetic phase. The c-axis resistivity of the itinerant metamagnet Sr3Ru2O7 has also been measured under pressure. The initial goal was to search for superconductivity, largely because of the interesting unconventional superconducting ground state found in its close sibling, Sr214. In particular, the c-axis conductivity was measured to rule out possible Sr2RuO4 inclusions within the sample. No superconductivity was found up to the highest pressures of 5.8 GPa and 4.7 GPa respectively in the two independent sets of measurements. Instead, we found that the high temperature resistance falls substantially with increasing pressure, unlike what has been reported for Sr214. The metamagnetic transition shifts rapidly with pressure to higher magnetic field. More importantly, power-law analysis at low temperatures at various pressures indicates that the strength of the electron-electron interaction decays rapidly with increasing pressure. This offers a natural explanation for our failure to induce superconductivity at high pressures.

Electrochemistry of Metal Chalcogenides

Author : Mirtat Bouroushian
Publisher : Springer Science & Business Media
ISBN 13 : 3642039677
Total Pages : 365 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis Electrochemistry of Metal Chalcogenides by : Mirtat Bouroushian

Download or read book Electrochemistry of Metal Chalcogenides written by Mirtat Bouroushian and published by Springer Science & Business Media. This book was released on 2010-04-23 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author provides a unified account of the electrochemical material science of metal chalcogenide (MCh) compounds and alloys with regard to their synthesis, processing and applications. Starting with the chemical fundamentals of the chalcogens and their major compounds, the initial part of the book includes a systematic description of the MCh solids on the basis of the Periodic Table in terms of their structures and key properties. This is followed by a general discussion on the electrochemistry of chalcogen species, and the principles underlying the electrochemical formation of inorganic compounds/alloys. The core of the book offers an insight into available experimental results and inferences regarding the electrochemical preparation and microstructural control of conventional and novel MCh structures. It also aims to survey their photoelectrochemistry, both from a material-oriented point of view and as connected to specific processes such as photocatalysis and solar energy conversion. Finally, the book illustrates the relevance of MCh materials to various applications of electrochemical interest such as (electro)catalysis in fuel cells, energy storage with intercalation electrodes, and ion sensing.

Introduction to Frustrated Magnetism

Author : Claudine Lacroix
Publisher : Springer Science & Business Media
ISBN 13 : 3642105890
Total Pages : 682 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Introduction to Frustrated Magnetism by : Claudine Lacroix

Download or read book Introduction to Frustrated Magnetism written by Claudine Lacroix and published by Springer Science & Business Media. This book was released on 2011-01-12 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of highly frustrated magnetism has developed considerably and expanded over the last 15 years. Issuing from canonical geometric frustration of interactions, it now extends over other aspects with many degrees of freedom such as magneto-elastic couplings, orbital degrees of freedom, dilution effects, and electron doping. Its is thus shown here that the concept of frustration impacts on many other fields in physics than magnetism. This book represents a state-of-the-art review aimed at a broad audience with tutorial chapters and more topical ones, encompassing solid-state chemistry, experimental and theoretical physics.

Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards

Download Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 348 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards by :

Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2005 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Intelligent Computing Techniques for Smart Energy Systems

Author : Akhtar Kalam
Publisher : Springer Nature
ISBN 13 : 9811502145
Total Pages : 1011 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis Intelligent Computing Techniques for Smart Energy Systems by : Akhtar Kalam

Download or read book Intelligent Computing Techniques for Smart Energy Systems written by Akhtar Kalam and published by Springer Nature. This book was released on 2019-12-16 with total page 1011 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book compiles the research works related to smart solutions concept in context to smart energy systems, maintaining electrical grid discipline and resiliency, computational collective intelligence consisted of interaction between smart devices, smart environments and smart interactions, as well as information technology support for such areas. It includes high-quality papers presented in the International Conference on Intelligent Computing Techniques for Smart Energy Systems organized by Manipal University Jaipur. This book will motivate scholars to work in these areas. The book also prophesies their approach to be used for the business and the humanitarian technology development as research proposal to various government organizations for funding approval.

The Role of Topology in Materials

Author : Sanju Gupta
Publisher :
ISBN 13 : 9783319765976
Total Pages : 297 pages
Book Rating : 4.7/5 (659 download)

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Book Synopsis The Role of Topology in Materials by : Sanju Gupta

Download or read book The Role of Topology in Materials written by Sanju Gupta and published by . This book was released on 2018 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the most important advances in the class of topological materials and discusses the topological characterization, modeling and metrology of materials. Further, it addresses currently emerging characterization techniques such as optical and acoustic, vibrational spectroscopy (Brillouin, infrared, Raman), electronic, magnetic, fluorescence correlation imaging, laser lithography, small angle X-ray and neutron scattering and other techniques, including site-selective nanoprobes. The book analyzes the topological aspects to identify and quantify these effects in terms of topology metrics. The topological materials are ubiquitous and range from (i) de novo nanoscale allotropes of carbons in various forms such as nanotubes, nanorings, nanohorns, nanowalls, peapods, graphene, etc. to (ii) metallo-organic frameworks, (iii) helical gold nanotubes, (iv) Möbius conjugated polymers, (v) block co-polymers, (vi) supramolecular assemblies, to (vii) a variety of biological and soft-matter systems, e.g. foams and cellular materials, vesicles of different shapes and genera, biomimetic membranes, and filaments, (viii) topological insulators and topological superconductors, (ix) a variety of Dirac materials including Dirac and Weyl semimetals, as well as (x) knots and network structures. Topological databases and algorithms to model such materials have been also established in this book. In order to understand and properly characterize these important emergent materials, it is necessary to go far beyond the traditional paradigm of microscopic structure-property-function relationships to a paradigm that explicitly incorporates topological aspects from the outset to characterize and/or predict the physical properties and currently untapped functionalities of these advanced materials. Simulation and modeling tools including quantum chemistry, molecular dynamics, 3D visualization and tomography are also indispensable. These concepts have found applications in condensed matter physics, materials science and engineering, physical chemistry and biophysics, and the various topics covered in the book have potential applications in connection with novel synthesis techniques, sensing and catalysis. As such, the book offers a unique resource for graduate students and researchers alike.

Chemical Vapor Transport Reactions

Author : Michael Binnewies
Publisher : Walter de Gruyter
ISBN 13 : 3110254654
Total Pages : 644 pages
Book Rating : 4.1/5 (12 download)

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Book Synopsis Chemical Vapor Transport Reactions by : Michael Binnewies

Download or read book Chemical Vapor Transport Reactions written by Michael Binnewies and published by Walter de Gruyter. This book was released on 2012-08-31 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive handbook covers the diverse aspects of chemical vapor transport reactions from basic research to important practical applications. The book begins with an overview of models for chemical vapor transport reactions and then proceeds to treat the specific chemical transport reactions for the elements, halides, oxides, sulfides, selenides, tellurides, pnictides, among others. Aspects of transport from intermetallic phases, the stability of gas particles, thermodynamic data, modeling software and laboratory techniques are also covered. Selected experiments using chemical vapor transport reactions round out the work, making this book a useful reference for researchers and instructors in solid state and inorganic chemistry.

Amorphous Solids

Author : William A. Phillips
Publisher : Springer Science & Business Media
ISBN 13 : 3642815340
Total Pages : 179 pages
Book Rating : 4.6/5 (428 download)

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Book Synopsis Amorphous Solids by : William A. Phillips

Download or read book Amorphous Solids written by William A. Phillips and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is now ten years since it was first convincingly shown that below 1 K the ther mal conductivity and the heat capacity of amorphous solids behave in a way which is strikingly different to that of crystalline solids. Since that time there has been a wide variety of experimental and theoretical studies which have not only defined and clarified the low temperature problem more closely, but have also linked these differences between amorphous and crystalline solids to those suggested by older acoustic and thermal experiments (extending up to 100 K). The interest in this somewhat restricted branch of physics lies to a considerable extent in the fact that the differences were so unexpected. It might be thought that as the tempera ture, probing frequency, or more generally the energy decreases, a continuum de scription in which structural differences between glass and crystal are concealed should become more accurate. In a sense this is true, but it appears that there exists in an amorphous solid a large density of additional excitations which have no counterpart in normal crystals. This book presents a survey of the wide range of experimental investigations of these low energy excitations, together with a re view of the various theoretical models put forward to explain their existence and nature.

Physics of Photonic Devices

Author : Shun Lien Chuang
Publisher : John Wiley & Sons
ISBN 13 : 1118585658
Total Pages : 842 pages
Book Rating : 4.1/5 (185 download)

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Book Synopsis Physics of Photonic Devices by : Shun Lien Chuang

Download or read book Physics of Photonic Devices written by Shun Lien Chuang and published by John Wiley & Sons. This book was released on 2012-11-07 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most up-to-date book available on the physics of photonic devices This new edition of Physics of Photonic Devices incorporates significant advancements in the field of photonics that have occurred since publication of the first edition (Physics of Optoelectronic Devices). New topics covered include a brief history of the invention of semiconductor lasers, the Lorentz dipole method and metal plasmas, matrix optics, surface plasma waveguides, optical ring resonators, integrated electroabsorption modulator-lasers, and solar cells. It also introduces exciting new fields of research such as: surface plasmonics and micro-ring resonators; the theory of optical gain and absorption in quantum dots and quantum wires and their applications in semiconductor lasers; and novel microcavity and photonic crystal lasers, quantum-cascade lasers, and GaN blue-green lasers within the context of advanced semiconductor lasers. Physics of Photonic Devices, Second Edition presents novel information that is not yet available in book form elsewhere. Many problem sets have been updated, the answers to which are available in an all-new Solutions Manual for instructors. Comprehensive, timely, and practical, Physics of Photonic Devices is an invaluable textbook for advanced undergraduate and graduate courses in photonics and an indispensable tool for researchers working in this rapidly growing field.