STRUCTURAL DISORDER IN AGBR ON THE APPROACH TO MELTING

被引：50

作者：

KEEN, DA ^{[1
]}

HAYES, W ^{[1
]}

MCGREEVY, RL ^{[1
]}

机构：

[1] UNIV OXFORD,CLARENDON LAB,OXFORD,ENGLAND

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 12期

关键词：

D O I：

10.1088/0953-8984/2/12/002

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The powder neutron diffraction pattern of AgBr has been measured at nine temperatures between 293 K and 703 K (melting point Tm=701 K). The structure factors have been analysed using the reverse Monte Carlo modelling technique to produce three-dimensional distributions of ions which show the thermally induced structural disorder in AgBr. Anisotropic mean squared displacements about lattice sites and occupancy of interstitial ( 1/4, 1/4, 1/4) sites by Ag+ ions have been calculated for each temperature, giving a quantitative description of the development of the structural disorder associated with premelting.

引用

页码：2773 / 2786

页数：14

共 21 条

[1]

ABOAGYE JK, 1975, PHYS REV B, V11, P1654, DOI 10.1103/PhysRevB.11.1654

[2] PREMELTING LATTICE DISORDER IN AGBR AND PBF2 [J].