Diffraction Studies of Ordered Phases and Phase Transitions

Diffraction Studies of Ordered Phases and Phase Transitions PDF Author: K. Kjær
Publisher:
ISBN: 9788755010161
Category : Diffraction
Languages : en
Pages : 182

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Diffraction Studies of Ordered Phases and Phase Transitions

Diffraction Studies of Ordered Phases and Phase Transitions PDF Author: K. Kjær
Publisher:
ISBN: 9788755010161
Category : Diffraction
Languages : en
Pages : 182

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Book Description


Risø Report

Risø Report PDF Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 724

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Phase Transitions in Surface Films

Phase Transitions in Surface Films PDF Author: J.G. Dash
Publisher: Springer Science & Business Media
ISBN: 1461330572
Category : Science
Languages : en
Pages : 369

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Book Description
The Advanced Study Institute on Phase Transitions in Surface Films was held at the Ettore Majorana Centre for Scientific Cul ture in Erice, Sicily, during June 11 to June 25, 1979. This Institute was the second course of the International School of Low Temperature Physics which was established at the Centre in 1977, with the guidance and inspiration of T. Regge and A. Zichichi. The 1979 course selected a topic on one of the most rapidly advancing fields of condensed matter physics in the late 70's. The program of topics and speakers was developed with the advice of the Organizing Committee, composed of J. Friedel, N. D. Mermin, R. E. Peierls, T. Regge and J. Wheatley. These two weeks were memorable for the range and depth of the lectures and seminars, and the sustained high interest of the students and faculty through a damanding schedule of over 5 hours a day of formal sessions. A large fraction of the leading researchers in the field were there. It would have been impossible to gather such a large group five years earlier, for the field itself is hardly 10 years old. Although the foundations of the thermodynamics of surface films were laid down by Gibbs about 100 years ago, and experiments on oil/water monolayers were carried out by Pockels and Rayleigh at about the same time, the beginnings of the modern field were much more recent.

Structural Phase Transitions I

Structural Phase Transitions I PDF Author: K.A. Müller
Publisher: Springer Science & Business Media
ISBN: 3642815316
Category : Science
Languages : en
Pages : 203

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Book Description
With contributions by numerous experts

X-Ray Diffraction Study of Nematic Smectic A and C Liquid Crystals

X-Ray Diffraction Study of Nematic Smectic A and C Liquid Crystals PDF Author: B. I. Ostrovskii
Publisher: CRC Press
ISBN: 9783718649075
Category : Science
Languages : en
Pages : 76

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Book Description
Reviews recent studies of X-ray scattering phenomena in liquid crystals, in particular their relationship to phase-transition physics. Also explored are the main approximations which are used to obtain structural information from the scattering spectre of liquid crystals and to determine the short-range order in the molecule arrangement.

The Physics of Structural Phase Transitions

The Physics of Structural Phase Transitions PDF Author: Minoru Fujimoto
Publisher: Springer Science & Business Media
ISBN: 0387268332
Category : Science
Languages : en
Pages : 284

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Book Description
Phase transitions in which crystalline solids undergo structural changes present an interesting problem in the interplay between the crystal structure and the ordering process. This text, intended for readers with some prior knowledge of condensed-matter physics, emphasizes the basic physics behind such spontaneous structural changes in crystals. Starting with the relevant thermodynamic principles, the book discusses the nature of order variables and their collective motion in a crystal lattice; in a structural phase transition a singularity in such a collective mode is responsible for the lattice instability, as revealed by soft phonons. This mechanism is analogous to the interplay of a charge-density wave and a periodically deformed lattice in low-dimensional conductors. The text also describes experimental methods for modulated crystal structures and gives examples of structural changes in representative systems. The book is divided into two parts. The first, theoretical, part includes such topics as: the Landau theory of phase transitions; statistics, correlations and the mean-field approximation; pseudospins and their collective modes; soft lattice modes and pseudospin condensates; lattice imperfections and their role in the phase transitions of real crystals. The second part discusses experimental studies of modulated crystals using x-ray diffraction, neutron inelastic scattering, light scattering, dielectric measurements, and magnetic resonance spectroscopy.

Particle Scattering, X-Ray Diffraction, and Microstructure of Solids and Liquids

Particle Scattering, X-Ray Diffraction, and Microstructure of Solids and Liquids PDF Author: Manfred L. Ristig
Publisher: Springer
ISBN: 3540458816
Category : Science
Languages : en
Pages : 206

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Book Description
Interesting and new specific results of current theoretical and experimental work in various fields at the frontier of particle scattering and X-ray diffraction are reviewed in this volume. Special emphasis is placed on the study of the microstructure of solids, crystals and liquids, both classically and quantum mechanically. This gives the reader essential insights into the dynamics and properties of these states of matter. The authors address students interested in the physics of quantum solids, crystallography and material science as well as physical chemistry and computational physics.

X-Ray Diffraction

X-Ray Diffraction PDF Author: Oliver H. Seeck
Publisher: CRC Press
ISBN: 9814303607
Category : Science
Languages : en
Pages : 438

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Book Description
High-resolution x-ray diffraction and scattering is a key tool for structure analysis not only in bulk materials but also at surfaces and buried interfaces from the sub-nanometer range to micrometers. This book offers an overview of diffraction and scattering methods currently available at modern synchrotron sources and illustrates bulk and interface investigations of solid and liquid matter with up-to-date research examples. It presents important characteristics of the sources, experimental set-up, and new detector developments. The book also considers future exploitation of x-ray free electron lasers for diffraction applications.

X-Ray and Neutron Dynamical Diffraction

X-Ray and Neutron Dynamical Diffraction PDF Author: André Authier
Publisher: Springer Science & Business Media
ISBN: 1461558794
Category : Science
Languages : en
Pages : 419

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Book Description
This volume collects the proceedings of the 23rd International Course of Crystallography, entitled "X-ray and Neutron Dynamical Diffraction, Theory and Applications," which took place in the fascinating setting of Erice in Sicily, Italy. It was run as a NATO Advanced Studies Institute with A. Authier (France) and S. Lagomarsino (Italy) as codirectors, and L. Riva di Sanseverino and P. Spadon (Italy) as local organizers, R. Colella (USA) and B. K. Tanner (UK) being the two other members of the organizing committee. It was attended by about one hundred participants from twenty four different countries. Two basic theories may be used to describe the diffraction of radiation by crystalline matter. The first one, the so-called geometrical, or kinematical theory, is approximate and is applicable to small, highly imperfect crystals. It is used for the determination of crystal structures and describes the diffraction of powders and polycrystalline materials. The other one, the so-called dynamical theory, is applicable to perfect or nearly perfect crystals. For that reason, dynamical diffraction of X-rays and neutrons constitutes the theoretical basis of a great variety of applications such as: • the techniques used for the characterization of nearly perfect high technology materials, semiconductors, piezoelectric, electrooptic, ferroelectric, magnetic crystals, • the X-ray optical devices used in all modem applications of Synchrotron Radiation (EXAFS, High Resolution X-ray Diffractometry, magnetic and nuclear resonant scattering, topography, etc. ), and • X-ray and neutron interferometry.

Advances in Structure Research by Diffraction Methods

Advances in Structure Research by Diffraction Methods PDF Author: W. Hoppe
Publisher: Elsevier
ISBN: 1483158411
Category : Science
Languages : en
Pages : 125

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Book Description
Advances in Structure Research by Diffraction Methods: Volume 5 presents discussions on application of diffraction methods in structure research. The book provides the aspects of structure research using various diffraction methods. The text contains 2 chapters. Chapter 1 reviews the general theory and experimental methods used in the study of all types of amorphous solid, by both X-ray and neutron diffraction, and the detailed bibliography of work on inorganic glasses. The second chapter discusses electron diffraction, one of the major methods of determining the structures of molecules in the gas phase. Chemists and molecular physicists will find the book a great source of information.