Study Of New Ternary Rare Earth Intermetallic Germanides With Polar Covalent Bonding
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| Author | : Riccardo Freccero |
| Publisher | : Springer Nature |
| Total Pages | : 221 |
| Release | : 2020-11-16 |
| Genre | : Technology & Engineering |
| ISBN | : 3030589927 |
The thesis focuses on the syntheses, structural characterizations and chemical bonding analyses for several ternary R–M–Ge (R = rare earth metal; M = another metal) intermetallics. The challenges in understanding the main interactions governing the chemistry of these compounds, which lead to our inability to predict their formation, structure and properties, are what provided the motivation for this study. In particular, the R2MGe6 (M = Li, Mg, Al, Cu, Zn, Pd, Ag), R4MGe10-x (M = Li, Mg), R2Pd3Ge5, Lu5Pd4Ge8, Lu3Pd4Ge4 and Yb2PdGe3 phases were synthesized and structurally characterized. Much effort was put into the stabilization of metastable phases, employing the innovative metal flux method, and into the accurate structure solution of twinned crystals. Cutting-edge position-space chemical bonding techniques were combined with new methodologies conceived to correctly describe the Ge–M, Ge–La and also La–M polar-covalent interactions for the La2MGe6 (M = Li, Mg, Al, Cu, Zn, Pd, Ag) series. The present results constitute a step forward in our comprehension of ternary germanide chemistry as well as providing a good playground for further investigations.
| Author | : |
| Publisher | : |
| Total Pages | : 886 |
| Release | : 2008 |
| Genre | : Dissertations, Academic |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 894 |
| Release | : 1983 |
| Genre | : Metallurgy |
| ISBN | : |
| Author | : Andrej Szytula |
| Publisher | : CRC Press |
| Total Pages | : 294 |
| Release | : 1994-03-08 |
| Genre | : Science |
| ISBN | : 9780849342615 |
Rare-earth intermetallics, also known as lanthanide elements, play an important role in the study of magnetic materials and the development of semi- and super-conducting materials. This handbook provides an up-to-date compilation of crystallographic, physical, and magnetic data on rare-earth intermetallic compounds. Over 20 different structure types are described in detail with an emphasis on how crystal structure can affect magnetic properties. Theoretical models for magnetic interactions are described as well as the impact of crystal electric fields on transport properties, magneto crystalline anistropy and hyperfine interactions. This book provides materials scientists, engineers and physicists with all the critical information needed to use rare-earth intermetallics effectively in the development of new materials.
| Author | : American Chemical Society. Committee on Professional Training |
| Publisher | : |
| Total Pages | : 1932 |
| Release | : 2005 |
| Genre | : Biochemistry |
| ISBN | : |
Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.
| Author | : Victor E. Borisenko |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 362 |
| Release | : 2013-03-07 |
| Genre | : Technology & Engineering |
| ISBN | : 3642596495 |
A comprehensive presentation and analysis of properties and methods of formation of semiconducting silicides. Fundamental electronic, optical and transport properties of the silicides collected from recent publications will help readers choose their application in new generations of solid-state devices. A comprehensive presentation of thermodynamic and kinetic data is given in combination with their technical application, as is information on corresponding thin-film or bulk crystal formation techniques.
| Author | : Roald Hoffmann |
| Publisher | : John Wiley & Sons |
| Total Pages | : 155 |
| Release | : 2021-01-29 |
| Genre | : Science |
| ISBN | : 1119809924 |
Dieses einzigartige Buch läßt Chemie und Physik im festen Zustand und auf Oberflächen 'zusammentreffen'. In einer lebhaften und anschaulichen Weise bringt es Chemikern die Sprache bei, mit der sie die Elektronenstruktur ausgedehnter Systeme verstehen lernen können. Gleichzeitig zeigt es, wie auch von Seiten der Chemie Modelle über den festen Zustand sowie über Bindungen und Reaktivität von Oberflächen erstellt werden können. Das Buch bedient sich zunächst der Sprache von Kristallorbitalen, Bandstrukturen und Zustandsdichten. Danach stellt es die Werkzeuge bereit, mit denen der Leser weg von den stark delokalisierten Orbitalen des Festkörpers gelangt, darunter der Zerfall von Zustandsdichten und die Population von Kristallorbital-Overlaps. Mit diesen Werkzeugen schafft es der Autor, detaillierte quantenmechanische Berechnungen mit der chemischen Betrachtungsweise mit Grenzorbitalen zu verknüpfen. Die beschriebenen Anwendungen umfassen eine allgemeine Vorstellung der Chemisorption, Bindungsbildung und -zerfall im festen Zustand, Bindungen im Metall, die Elektronenstruktur ausgewählter leitender und supraleitender Verbindungen sowie die für die Deformation ausgedehnter Systeme verantwortlichen Kräfte.
| Author | : Michael Binnewies |
| Publisher | : Walter de Gruyter |
| Total Pages | : 644 |
| Release | : 2012-08-31 |
| Genre | : Science |
| ISBN | : 3110254654 |
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.
| Author | : Susan Mary Kauzlarich |
| Publisher | : VCH Publishers |
| Total Pages | : 344 |
| Release | : 1996 |
| Genre | : Science |
| ISBN | : |
Seven chapters report current research into the phases and ions of a class of compounds that are electronically positioned between the intermetallic compounds and insulating valence compounds. They cover structure and bonding at the Zintl border, structural patterns of homo- and hetero-nuclear anions and related intermetallic compounds and concepts for interpreting them, the early p-block elements, polyanions in liquid ionic alloys, molecular transition metal complexes, transition metal compounds, and synthesizing and characterizing intermetallic materials using Zintl phases as precursors. An introduction surveys the life and work of German chemist Eduard Zintl (1898-1941). Annotation copyright by Book News, Inc., Portland, OR
| Author | : Ulrich Müller |
| Publisher | : Academic |
| Total Pages | : 349 |
| Release | : 2013-04-04 |
| Genre | : Science |
| ISBN | : 0199669953 |
The book presents the basic information needed to understand and to organize the huge amount of known structures of crystalline solids. Its basis is crystallographic group theory (space group theory), with special emphasis on the relations between the symmetry properties of crystals.
