## Neutron Scattering for Materials Science:The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners. |

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Page 351

X. (14) The coherent one-phonon structure factor for the

Q»eiT(Q»eH<n, + 1> SC.X (0) = 5^ I (same factors as Sd) /?' * 2N y (MjMj)"2^ (15

> where co^, and represent the frequency, displacement vectors and thermal ...

X. (14) The coherent one-phonon structure factor for the

**mode**X is given by , ^, n(Q»eiT(Q»eH<n, + 1> SC.X (0) = 5^ I (same factors as Sd) /?' * 2N y (MjMj)"2^ (15

> where co^, and represent the frequency, displacement vectors and thermal ...

Page 365

The

localization, the inverse participation ratio [9] 1/p, for each

thought of as the inverse of the number of atoms moving in a vibrational model

Fig.

The

**mode**eigenvectors were used to calculate a very useful measure of**mode**localization, the inverse participation ratio [9] 1/p, for each

**mode**. 1/p can bethought of as the inverse of the number of atoms moving in a vibrational model

Fig.

Page 366

The broad peak between 480 and 710 cm-1 consists of (i) bending

monohydride species that have 1/p values greater than 0.9, and (ii) both the rock

and twist

0.6, ...

The broad peak between 480 and 710 cm-1 consists of (i) bending

**modes**ofmonohydride species that have 1/p values greater than 0.9, and (ii) both the rock

and twist

**modes**of the dihydride species that have 1/p values between 0.4 and0.6, ...

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### Contents

THE KINDER GENTLER PROBE OF CONDENSED MATTER | 3 |

NEUTRON SCATTERING METHODS FOR MATERIAL SCIENCE | 15 |

THE ADVANCED NEUTRON SOURCE | 27 |

Copyright | |

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1990 Materials Research aerogel alloys analysis angle neutron scattering annealing Argonne Argonne National Laboratory atoms boron Bragg peaks calculated composition concentration copolymer correlation decrease defects detector determined deuterated deuterium diffractometer diffuse scattering displacements distribution effect elastic electronic energy experimental Fermi surface ferroelastic Figure film function incoherent scattering increase inelastic interface ISBN lattice parameter layers Lett magnetic Materials Research Society Materials Science measured metals method mode molecular multilayers National Laboratory neutron diffraction neutron powder diffraction neutron reflectivity Neutron Source observed obtained oxygen oxygen content pair interactions particles phase transition phonon Phys plane polymer pore powder diffraction Proc range reactor refinement reflectivity profile residual stresses resolution sample scattering intensity short-range order shown in Fig shows silica silicon single crystal sintering small angle neutron specimen spectrometer stoichiometry strain structure factor superconductivity Symp technique thermal values Vycor wafer wavelength width X-ray YBCO