Structural Phase Transitions on Non-stoichiometric Oxides and Other Materials PDF Download
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Author:
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ISBN:
Category :
Languages : en
Pages :
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Author:
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ISBN:
Category :
Languages : en
Pages :
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Author: C. Boulesteix
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 488
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Book Description
Some new aspects of the physics and chemistry of oxides are considered in this book. Typical examples are the non-stoichiometry of oxides and the structure and physical properties of High-Tc Superconductors. In both cases, some very new aspects of these domains are treated, and phase transitions are accorded their full importance in understanding so many of the physical properties of oxides.
Author: Speranta Tanasescu
Publisher: BoD – Books on Demand
ISBN: 1789854512
Category : Science
Languages : en
Pages : 104
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The interrelation among composition, microstructure, and properties of stoichiometric and nonstoichiometric compounds is a major field of research for both scientific and technological reasons. As such, this book focuses on metal oxides, which present a large diversity of electrical, magnetic, optical, optoelectronic, thermal, electrochemical, and catalytic properties, making them suitable for a wide range of applications. By bringing together scientific contributions with special emphasis on the interrelations between materials chemistry, processing, microstructures, and properties of stoichiometric and nonstoichiometric metal oxides, this book highlights the importance of tightly integrating high-throughput experiments (including both synthesis and characterization) and efficient and robust theory for the design of advanced materials.
Author: C. Boulesteix
Publisher: Trans Tech Publications Ltd
ISBN: 3035703337
Category : Technology & Engineering
Languages : en
Pages : 348
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The relative importance of oxides in the field of materials science has been spectacularly increasing during the last twenty years. First the study of ferroelectrics kept the attention of scientists. Nevertheless this domain is far from being worked out and a lot of new results and of new fields of interest were recently discovered.
Author: K. Motizuki
Publisher: Springer Science & Business Media
ISBN: 9400945760
Category : Science
Languages : en
Pages : 309
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Book Description
The structural phase transition is one of the most fundamental problems in solid state physics. Layered transition-metal dichalcogenides provide us with a most exciting area for the study of structural phase transitions that are associated with the charge density wave (CDW). A large variety of structural phase transitions, such as commensurate and incommensurate transitions, and the physical proper ties related to the formation of a CDW, have been an object of intense study made for many years by methods employing modem microscopic techniques. Rather recently, efforts have been devoted to the theoretical understanding of these experimental results. Thus, McMillan, for example, has developed an elegant phenomenological theory on the basis of the Landau free energy expansion. An extension of McMillan's theory has provided a successful understanding of the successive phase transitions observed in the IT- and 2H-compounds. In addition, a microscopic theory of lattice instability, lattice dynamics, and lattice distortion in the CDW state of the transition-metal dichalcogenides has been developed based on their electronic structures. As a result, the driving force of the CDW formation in the IT- and 2H-compounds has become clear. Furthermore, the effect of lattice fluctuations on the CDW transition and on the anomalous behavior of various physical properties has been made clear microscopically.
Author:
Publisher: DIANE Publishing
ISBN: 142234567X
Category :
Languages : en
Pages : 279
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Author: Andrzej Stok?osa
Publisher: Trans Tech Publications Ltd
ISBN: 3038266086
Category : Technology & Engineering
Languages : en
Pages : 590
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In the present work, in Part I, new elements widening the bases of the defects theory are shown; particularly, this work discusses the mechanism of the formation of defects as a result of elementary processes; the work also presents a description of the equilibrium state by one equation, taking into account the concentrations of defects and their changes during the process of reaching the equilibrium. The equation relates the concentrations of defects, dependent on the standard Gibbs energies of their formation, with the equilibrium pressure of oxygen. The obtained relations and the discussion have lead to the development of a method for determination of complete diagrams of concentrations of the point defects, which allows taking into account the minority defects. Part II presents the results of the calculations of the diagrams of point defects concentrations for a series of pure and doped oxides of transition metals 3d, with different composition (M/O ratio), crystallographic structure and point defects structure. A critical analysis of the results of the studies of the deviation from the stoichiometry and the electrical conductivity, obtained (so far) by most research groups has been also performed. A new interpretation of these results, concerning concentrations and types of ionic defects present has been performed and the mobility of electronic defects and its dependence on the temperature and oxygen pressure have been determined.
Author: K Motizuki
Publisher:
ISBN: 9789400945777
Category :
Languages : en
Pages : 316
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Author: C. Boulesteix
Publisher: Trans Tech Publications Ltd
ISBN: 3035703736
Category : Technology & Engineering
Languages : en
Pages : 476
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Book Description
Some new aspects of the physics and chemistry of oxides are considered in this book. Typical examples are the non-stoichiometry of oxides and the structure and physical properties of High-Tc Superconductors. In both cases, some very new aspects of these domains are treated, and phase transitions are accorded their full importance in understanding so many of the physical properties of oxides.
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher:
ISBN:
Category : Energy development
Languages : en
Pages : 1262
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Book Description
