Dynamics of Solids and Liquids by Neutron ScatteringS. W. Lovesey, T. Springer Inelastic neutron scattering is a well established and important technique for studying the dynamical properties of condensed matter at the atomic level. Often, as is the case of experiments designed to study motions of hydrogen atoms, or magnetic excitations, it may yield information obtainable in no other way. Our aim in assembling this book is to produce an overview of some research topics which have come to the fore recently with the development of high neutron fluxes and high performance inelastic scattering spectrometers. The topics dis cussed here are, by and large, developing rapidly and have not reached the stage at which definitive accounts are always possible. Authors have not therefore attempted to make an extensive review of their topic, and the papers quoted in the text are, in general, those which are seen as having been important in its develop ment (they date, roughly, from the 1971 IAEA conference on neutron scattering held in Grenoble). Basic phenomena are illustrated for the most part by the discussion of one, or two, typical examples. The authors hope that the book will be useful to researchers who are not yet fully aware of the diverse range of problems to which the technique can be applied, and to students beginning research work. For this reason, the first chapter by S. w. |
Contents
Crystal Lattices and Reciprocal Lattices | 71 |
Phonons By H G Smith and N Wakabayashi | 78 |
Phonons and Structural Phase Transformations | 127 |
77 | 181 |
80 | 187 |
References | 192 |
References | 252 |
and MnF 2 | 270 |
References | 297 |
References | 328 |
| 372 | |
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adsorbed Alefeld amplitudes antiferromagnet approximation atoms Bragg Brillouin zone calculated chain Chem coherent collective mode constant correlation function cross-section Debye-Waller factor density diffraction diffusion discussed dispersion curves displacements DORNER eigenvector elastic electron energy transfer example excitations experimental ferroelectric fluctuations force field graphite hydrodynamic hydrogen incoherent scattering inelastic neutron scattering inelastic scattering intensity interaction ions layer Lett librational liquid LOVESEY low temperature magnetic magnon measurements metals molecules momentum transfer monochromator monolayer motion observed optical order parameter orientation orthorhombic peak phase transformation phase transition phonon phonon dispersion curves Phys plane polarization polymers potential proton reciprocal lattice reciprocal space relaxation resolution rotational sample scattering function scattering law Shirane shown single crystals soft mode solid spectra spectrometer spectrum spin structure factor symmetry theory thermal tion unit cell vector vibrations wave wave-vector width X-ray scattering zero