Kategoria BISAC: Science >> Physics - Crystallography

Most organic reactions have long been carried out in organic solvents without concern for their real necessity, reaction efficiency, and pollution problems. Very recently, we have found that most organic reactions can be carried out in the absence of a solvent, namely, in the solid state. In many cases, the solid-state reaction proceeds more easily and efficiently, and even more selectively than solution reaction. This shows that molecules move easily and selectively in the solid state. This finding changed the classical idea which suggests "molecules do not move and reactions do not occur in...

Luminescence Spectroscopy of Minerals and Materials presents an overview of the general concepts in luminescence spectroscopy as well as experimental methods and their interpretation. Special emphasis is laid on the fluorescence lifetime and the determination of time-resolved spectra. This method enables the exposure of new luminescence in minerals previously hidden by more intensive centers. Specialists in the fields of solid state physics, chemistry and spectroscopy will find a wealth of new information in this unique book.

One should distinguish between coordination numbers and hydration numbers. Following Bockris

Dieses Buchbehandelt zwei miteinander verwandte Themenkreise: 1) Die Theorie der diskreten Bewegungsgruppen in Euklidischen Raumen beliebiger Dimension. Diese Theorie wurde von Bieberbach und Frobenius entwickelt. Ihr In halt sind verschiedene Beschreibungen der sogenannten Raumgruppen, sowie der Satz, daB es bei vorgegebener Dimension des Raumes bis auf quivalenz nur endlich viele Raumgruppen gibt. Daneben sind Abschat zungen fUr die Ordnung einer endlichen Matrizengruppe von Interesse. 2) Die Aufzahlung der Ornament- und Kristallgruppen, also der Raum gruppen fUr die Dimensionen.2 und 3....

In The Crystallization of Polymers, 2nd Edition, Leo Mandelkern provides a self-contained, comprehensive and up-to-date treatment of polymer crystallization. All classes of macromolecules are included and the approach is through the basic disciplines of chemistry and physics. The book discusses the thermodynamics and physical properties that accompany the morphological and structural changes that occur when a collection of molecules of very high molecular weight are transformed from one state to another. Volume I is a presentation of the equilibrium concepts that serve as a basis for the...

The molecular mechanisms underlying the fact that a crystal can take a variety of external forms is something we have come to understand only in the last few decades. This is due to recent developments in theoretical and experimental investigations of crystal growth mechanisms.
Morphology of Crystals is divided into three separately available volumes. Part A contains chapters on roughening transition; equilibrium form; step pattern theory; modern PBC; and surface microtopography. This part provides essentially theoretical treatments of the problem, particularly the solid-liquid...

Surface crystallography is a discipline which has come of age. There exist in the literature several hundred complete determinations of atomic configurations at surfaces: yet the number is not so great that cataloguing these structures is too daunting a task. We felt that now was the right moment to begin a compilation that could be updated at frequent intervals to give a comprehensive picture of the known surface world. The following pages are the product of our labours. Our target community is the large number of surface chemists, materials scientists, physicists and others whose work...

Site Symmetry in Crystals is the first comprehensive account of the group-theoretical aspects of the site (local) symmetry approach to the study of crystalline solids. The efficiency of this approach, which is based on the concepts of simple induced and band representations of space groups, is demonstrated by considering newly developed applications to electron surface states, point defects, symmetry analysis in lattice dynamics, the theory of second-order phase transitions, and magnetically ordered and non-rigid crystals. Tables of simple induced respresentations are given for the 24...

Dieses Lehrbuch bietet eine gut verstandliche Einfuhrung in die Festkorperchemie. Zunachst werden die klassischen Grundlagen, wie Kristallstrukturen und deren elektronische Eigenschaften, erlautert. Interessante Eigenschaften der Festkorper wie die Leitfahigkeit fuhrten zu Anwendungen und Erforschung dieser Substanzen in den Materialwissenschaften. Daher befassen sich die Autoren intensiv mit Supraleitfahigkeit, Batterien, Katalysatoren, Halbleiter- und Lasertechnikanwendungen.

Volume 11 of group IV presents phase diagrams, crystallographic and thermodynamic data of ternary alloy systems. The subvolume D deals with iron systems, with part 1 considering selected systems from Al-B-Fe to C-Co-Fe. The volume forms a comprehensive review and rigorous systematization of the presently available data. For each system the often conflicting literature and information has been thoroughly evaluated by a team of experts and is presented in a standard format.

Developing and testing novel energetic materials is an expanding branch of the materials sciences. Reaction, detonation or explosion of such materials invariably produce extremely high pressures and temperatures. To study the equations-of-state (EOS) of energetic materials in extreme regimes both shock and static high pressure studies are required. The present volume is an introduction and review of theoretical, experimental and numerical aspects of static compression of such materials. Chapter 1 introduces the basic experimental tool, the diamond anvil pressure cell and the observational...

The present volume in the New Series of Landolt-Bornstein provides critically evaluated data on phase diagrams, crystallographic and thermodynamic data of ternary alloy systems. Reliable phase diagrams provide materials scientists and engineers with basic information important for fundamental research, development and optimization of materials.

The often conflicting literature data have been critically evaluated by Materials Science International Team, MSIT(r), a team working together since many years, and with expertise in a broad range of methods, materials and applications. All...

This volume contains extended abstracts of the 10 plenary lectures, 27 invited symposium lectures and ap- proximately 300 contributed papers that were presented at the 25th Congress Ampere. The contributions cover the full range of magnetic resonance and radiospectroscopy and their applications in physics, chemical physics, medicine and biology. Advanced NMR and ESR techniques are treated, as are their applications to novel materials.

The present volume in the New Series of Landolt-Bornstein provides critically evaluated data on phase diagrams, crystallographic and thermodynamic data of ternary alloy systems. The often conflicting literature data have been critically evaluated by Materials Science International Team, MSIT(R), a team working together for many years, and with expertise in a broad range of methods, materials and applications.

The present volume in the New Series of Landolt-Bornstein provides critically evaluated data on phase diagrams, crystallographic and thermodynamic data of ternary alloy systems. The often conflicting literature data have been critically evaluated by Materials Science International Team, MSIT(R), a team working together for many years, and with expertise in a broad range of methods, materials and applications.

Elucidates the structure and properties of solids including ionic, molecular and valence crystals, and looks at surfaces and clusters as potential catalysts. Co-operative effects such as those in alloys and ferro-electrics are described simply. Physical principles are explained in chemical terms.

Superconductors with high critical temperatures are extremely complex and it remains difficult to synthesize high quality samples. In this regard, the materials and crystallographic aspects, drawing together the fields of structural chemistry and physics, solid state chemistry and physics, and applications and properties, both for cuprate and organic superconductors, play a vital role in our understanding of the phenomenon.

Papers from the Sixth All-Union Conference on Growth of Crystals comprise Volume 16 of this series. The articles were chosen with a view to more fully elucidate the basic problems of crystal growth as reflected in domestic and foreign reviews and in original studies. This volume consists of six parts. Part I is devoted to mechanisms of crystal growth that are important for production of materials with given properties. This part examines the temporal evolution of an inhomogeneous state and the array of semicellular and eutectic structures during microstructure formation, the effect of...

Volume 19 includes articles on growth of crystals from the vapor, from the melt, and from fluxes, as well as a section on actual structure of crystals and films relative to growth conditions.