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Author: George Simkovich
Publisher: Springer Science & Business Media
ISBN: 1461325196
Category : Science
Languages : en
Pages : 548
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Book Description
Prior to the 9th International Conference on Reactivity Solids in Krakow, Poland a group of about 25 international scientists held a special conference entitled "Transport in Nonstoichiometric Compounds" in late Aug. 1980 in Mogilany, Poland (near Krakow). This conference was well received in view of the interaction between the participants, as well as the resulting publication of the proceedings (Elsevier Scientific Publishing Company, 1982, edited by J. Nowotny). At this first conference the participants decided that it would be desirable to organize similar conferences at about two year intervals. Thus, a second meeting was held in late June, early July at Alenya, Pyrenees Orientales, France. This conference had a larger number of participants, about 50, but still managed to promote excellent interaction between all the participants. These proceedings, with editors G. Petot-Ervas, Hj. Matzke and C. Monty, have also been published by Elsevier as a special edition of the journal, Solid State lonics, Vol. 12 (1984). In view of the success of the initial two conferences, a third meeting was organized and held at The Pennsylvania State University, University Park, PA., 16802, U.S.A. from 11 June 84 to 15 June 84. The proceedings of this conference are presented in the following text.
Author: George Simkovich
Publisher: Springer Science & Business Media
ISBN: 1461325196
Category : Science
Languages : en
Pages : 548
Get Book Here
Book Description
Prior to the 9th International Conference on Reactivity Solids in Krakow, Poland a group of about 25 international scientists held a special conference entitled "Transport in Nonstoichiometric Compounds" in late Aug. 1980 in Mogilany, Poland (near Krakow). This conference was well received in view of the interaction between the participants, as well as the resulting publication of the proceedings (Elsevier Scientific Publishing Company, 1982, edited by J. Nowotny). At this first conference the participants decided that it would be desirable to organize similar conferences at about two year intervals. Thus, a second meeting was held in late June, early July at Alenya, Pyrenees Orientales, France. This conference had a larger number of participants, about 50, but still managed to promote excellent interaction between all the participants. These proceedings, with editors G. Petot-Ervas, Hj. Matzke and C. Monty, have also been published by Elsevier as a special edition of the journal, Solid State lonics, Vol. 12 (1984). In view of the success of the initial two conferences, a third meeting was organized and held at The Pennsylvania State University, University Park, PA., 16802, U.S.A. from 11 June 84 to 15 June 84. The proceedings of this conference are presented in the following text.
Author: G. Petot-Ervas
Publisher:
ISBN:
Category : Condensed matter
Languages : en
Pages : 568
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Book Description
Author: Janusz Nowotny
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 552
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Book Description
Author: J. Nowotny
Publisher: Springer Science & Business Media
ISBN: 9400909438
Category : Science
Languages : en
Pages : 574
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Book Description
The material in this book is based on invited and contributed pa pers presented at the NATO Advanced Research Workshop on INon-stoichio l metric Compounds held in Ringberg Castle, Rottach-Egern (Bavarian Alps), Germany, July 3-9, 1988. The workshop followed previous meetings held in Mogilany, Poland (1980), Alenya, France (1982), Penn State, USA (1984) and Keele University, UK (1986). The aim of these workshops is to present and discuss up-to-date knowledge in the study of non-stoichiometry and its effect on materials properties as well as to indicate the most urgent research pathways required in this field. Since the subject of non-stoichiometry is interdisciplinary, the workshops bring together solid state physicists and chemists, surface scientists, materials scientists, ceramists and metallurgists. The present workshop, which gathered 42 scientists of an inter national reputation, mainly considered the effect of surfaces, grain boundaries and structural defects on materials properties. From discus sions during this meeting it emerged that correct understanding of properties of ceramic materials requires urgent studies on the defect structure of the interface region. Progress in this direction requires the development of the interface defect chemistry. This is the task for materials scientists in the near future. The present proceedings includes both theoretical and experimen tal work on general aspects of non-stoichiometry, defect structure and diffusion in relation to the bulk and to the interface region of such materials as high tech ceramics, solid electrolytes, electronic cera mics, nuclear materials and high Tc oxide superconductors.
Author: Charles Richard Arthur Catlow
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 744
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Book Description
Author: O.T. Soerensen
Publisher: Elsevier
ISBN: 0323149804
Category : Science
Languages : en
Pages : 454
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Book Description
Nonstoichiometric Oxides discusses the thermodynamic and structural studies of nonstoichiometric oxides. This eight-chapter text also covers the defect-defect interactions in these compounds. The introductory chapters describe the thermodynamic properties of nonstoichiometric oxides in terms of defect complexes using the classical thermodynamic principles and from a statistical thermodynamics point of view. These chapters also include statistical thermodynamic models that indicate the ordered nonstoichiometric phase range in these oxides. The subsequent chapters examine the transport properties, such as diffusion and electrical conductivity. Diffusion theories and experimental diffusion coefficients for several systems, as well as the electrical properties of the highly defective ionic and mixed oxide conductor, are specifically tackled in these chapters. The concluding chapters present the pertinent results obtained in nonstoichiometric oxide structural studies using high-resolution electron microscopy and X-ray and neutron diffraction. Inorganic chemists and inorganic chemistry teachers and students will greatly appreciate this book.
Author: Jibamitra Ganguly
Publisher: Springer Science & Business Media
ISBN: 1461390192
Category : Science
Languages : en
Pages : 580
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Book Description
One of the fundamental objectives of physical geochemistry is to understand the evolution of geochemical systems from microscopic to regional and global scales. At present there seems to be a general recognition of the fact that internal properties of minerals record important aspects of the evolutionary history of their host rocks which may be unraveled by very fine scale observations. A major focus in the development of geochemical research in the last thirty years has been the application of classical thermodynamics to reconstruct the conditions at which the states of quenched mineralogical properties of rocks have equilibrated during the course of their evolution. While these works have funda mentally influenced our understanding ofthe physico-chemical history ofrocks, in recent years petrologists, mineralogists, and geochemists have been making greater efforts towards the application of kinetic theories in order to develop a better appreciation of the temporal details of geochemical processes. The present volume brings together a variety of current research on transport in systems of geochemical interest from atomic to outcrop scales. A major theme is atomic migration or diffusion, and its various manifestations on microscopic and macroscopic scales. Transport in the solid state is controlled by diffusion and is responsible for the states of atomic ordering and relaxation of composi tional zoning in minerals, development of compositional zoning during cooling, exsolution lamellae, and creep.
Author: Koji Kosuge
Publisher: Oxford University Press
ISBN: 0191661139
Category : Science
Languages : en
Pages : 273
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Book Description
This unified presentation of the chemistry of non-stoichiometric compounds is the first monograph on the subject for two decades. Based on statistical thermodynamics and structural inorganic chemistry, with descriptions of modern examples and applications, this will be useful to both researchers in industry and undergraduates in solid state chemistry and physics.
Author: Andrzej Stokłosa
Publisher: Trans Tech Publications Ltd
ISBN: 3038266086
Category : Technology & Engineering
Languages : en
Pages : 577
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Book Description
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: D. J. M. Bevan
Publisher: Elsevier
ISBN: 148315176X
Category : Science
Languages : en
Pages : 177
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Book Description
Non-Stoichiometric Compounds: Tungsten Bronzes, Vanadium Bronzes and Related Compounds deals with the chemistry of non-stoichiometric compounds such as tungsten bronzes and vanadium bronzes. Topics covered include the thermodynamic basis for lattice defects and non-stoichiometry; thermodynamics of binary crystals; non-stoichiometry in ionic crystals; and interaction of defects. A structural view of non-stoichiometric compounds is also presented. Comprised of two parts, this volume begins with a historical account of developments in non-stoichiometry, focusing on the thermodynamic treatments and structural descriptions of non-stoichiometric compounds. The discussion then turns to the thermodynamic basis for lattice defects and non-stoichiometry, along with the thermodynamics of binary crystals and electronic defects in ionic crystals. Classical defect models are also described, and defect interactions in non-stoichiometric compounds are considered, together with the thermodynamics and crystallography in such compounds. The last section is devoted to tungsten bronzes, vanadium bronzes, and related compounds including bronzes of molybdenum, rhenium, niobium, tantalum, titanium, manganese, platinum, and palladium. This book is intended for inorganic chemists.
