Neutron diffraction study of YMn2Dx deuterides (1<=x<=3.4)

被引：30
|
作者：
Latroche, M
PaulBoncour, V
Przewoznik, J
PercheronGuegan, A
BoureeVigneron, F
机构：
[1] STANISLAW STASZIC UNIV MIN & MET,DEPT SOLID STATE PHYS,PL-30059 KRAKOW,POLAND
[2] CEA SACLAY,CE,CNRS,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1995年 / 231卷 / 1-2期
关键词：
intermetallic compounds; neutron diffraction; deuterides; structural determination; hydrogen location;
D O I：
10.1016/0925-8388(95)01845-X
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The YMn2Dx system was studied by means of neutron powder diffraction at temperatures above the magnetic transition in the range 1 less than or equal to x less than or equal to 3.4 D per formula unit. The C15 structure of the YMn2 intermetallic compound is conserved on deuteration. A linear dependence of the cell parameter on deuterium content x was observed. The position and site occupation of deuterium were determined; only the A(2)B(2)-type sites are occupied in this range of concentration. Analysis of the background shows a diffuse contribution attributed to deuterium atom correlations. The site filling and the short-range ordering effect can be explained on the basis of geometrical considerations.
引用
收藏
页码：99 / 103
页数：5
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