AN INVESTIGATION OF ANHARMONIC ATOMIC VIBRATIONS OF GAMMA-CUCL AND GAMMA-CUBR BY POWDER NEUTRON-DIFFRACTION

被引：25

作者：

ALTORFER, F

GRANELI, B

FISCHER, P

BUHRER, W

机构：

[1] ETH ZURICH,NEUTRON SCATTERING LAB,CH-5232 VILLIGEN,SWITZERLAND

[2] PSI,CH-5232 VILLIGEN,SWITZERLAND

[3] LULEA UNIV PHYS,DEPT PHYS,S-97187 LULEA,SWEDEN

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1994年 / 6卷 / 46期

关键词：

D O I：

10.1088/0953-8984/6/46/013

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Powder neutron diffraction measurements were made on CuCl and CuBr solid ion conductors over large ranges of temperature in the cubic gamma phase (sphalerite structure). Anharmonic data treatment based on the Gram-Charlier expansion showed significant contributions up to fourth order for the thermal parameters of Cu. The thermal motion of Cu is strongly elongated along the tetrahedral diagonals. The corresponding probability density maps and the derived potential functions illustrate the characteristics.

引用

页码：9949 / 9962

页数：14

共 25 条

[1]

Bacon G.E., 1975, NEUTRON DIFFRACTION

[2]

BOYSEN H, 1992, ACCURACY POWDER DIFF, V2, P165

[3]

BOYSEN H, 1990, ACTA CRYSTALLO SC308, V46

[4] CRYSTAL-STRUCTURE OF HIGH-TEMPERATURE CUPROUS IODIDE AND CUPROUS BROMIDE [J].