ORDERING OF DEUTERIUM IN PDD0.65 AT 54-K

被引：16

作者：

KENNEDY, SJ

WU, E

KISI, EH

GRAY, EM

KENNEDY, BJ

机构：

[1] GRIFFITH UNIV,SCH SCI,BRISBANE,QLD 4111,AUSTRALIA

[2] UNIV NEWCASTLE,DEPT MECH ENGN,CALLAGHAN,NSW 2308,AUSTRALIA

[3] UNIV SYDNEY,DEPT INORGAN CHEM,SYDNEY,NSW 2006,AUSTRALIA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1995年 / 7卷 / 04期

关键词：

D O I：

10.1088/0953-8984/7/4/001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Neutron powder diffraction studies on PdD0.65 demonstrate that the 50 K anomaly is due to an order-disorder transition of deuterium within octahedral interstitial sites. The slow transition to the ordered phase involves diffusion of deuterium from the nearest-neighbour deuterium positions to the second-nearest-neighbour positions. The ordered crystal structure remains cubic, and is accurately described in space group Pm (3) over bar n by doubling the cell constant relative to the disordered structure (space group Fm3m).

引用

页码：L33 / L40

页数：8

共 15 条

[1] 50-K TRANSITION IN BETA-PHASE PALLADIUM DEUTERIDE OBSERVED BY NEUTRON-SCATTERING [J].