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Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides

2020-11-04 Science
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Release : 2020-11-04
Genre : Science
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Book Rating : 512/5 ( reviews)

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Book Synopsis Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides by : Speranta Tanasescu

Download or read book Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides written by Speranta Tanasescu. This book was released on 2020-11-04. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Nonstoichiometric Oxides

2012-12-02 Science
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Release : 2012-12-02
Genre : Science
Kind : eBook
Book Rating : 804/5 ( reviews)

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Book Synopsis Nonstoichiometric Oxides by : O.T. Soerensen

Download or read book Nonstoichiometric Oxides written by O.T. Soerensen. This book was released on 2012-12-02. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Non-Stoichiometric Oxides: Structure, Texture, Thermodynamics and Magnetic Properties

1975
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Release : 1975
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Book Synopsis Non-Stoichiometric Oxides: Structure, Texture, Thermodynamics and Magnetic Properties by : B. G. Hyde

Download or read book Non-Stoichiometric Oxides: Structure, Texture, Thermodynamics and Magnetic Properties written by B. G. Hyde. This book was released on 1975. Available in PDF, EPUB and Kindle. Book excerpt: The thermodynamics of the titanium-oxygen system was studied in the composition range of Ti3O5 to TiO2 at 1304K and the anion diffusion rates measured. There was no very marked trend in the diffusion coefficient with composition. A novel technique for studying oxidation/reduction mechanisms in transitional-metal oxides by direct observation in the electron microscope was developed. Studies of rutile-related systems were completed. It revealed the phenomenon of 'swinging CS planes, ' where by rotation of the CS plane direction a continuous sequence of fully ordered structures of varying composition is passible. Magnetic susceptibility of the titanium oxide systems were studied as a function of composition and temperature. The magnetic anisotropy of single crystals in the same composition range has been measured.

The Role of Non-Stoichiometry in the Functional Properties of Oxide Materials

2019-12-09
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Release : 2019-12-09
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Book Rating : 559/5 ( reviews)

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Book Synopsis The Role of Non-Stoichiometry in the Functional Properties of Oxide Materials by : Maria Veronica Ganduglia-Pirovano

Download or read book The Role of Non-Stoichiometry in the Functional Properties of Oxide Materials written by Maria Veronica Ganduglia-Pirovano. This book was released on 2019-12-09. Available in PDF, EPUB and Kindle. Book excerpt:

Non-Stoichiometric Oxides of 3d-Metals

2015-03-18 Technology & Engineering
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Release : 2015-03-18
Genre : Technology & Engineering
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Book Rating : 086/5 ( reviews)

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Book Synopsis Non-Stoichiometric Oxides of 3d-Metals by : Andrzej Stok?osa

Download or read book Non-Stoichiometric Oxides of 3d-Metals written by Andrzej Stok?osa. This book was released on 2015-03-18. Available in PDF, EPUB and Kindle. Book excerpt: 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.

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