Structure and magnetic properties of TbNiAl-based deuterides

被引：8

作者：

Brinks, HW

Yartys, VA

Hauback, BC

Fjellvåg, H

机构：

[1] Inst Energy Technol, N-2007 Kjeller, Norway

[2] Univ Oslo, Dept Chem, N-0315 Oslo, Norway

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2002年 / 330卷

关键词：

magnetic structure; terbium nickel aluminium deuteride; crystal structure; metal hydride; neutron diffraction;

D O I：

10.1016/S0925-8388(01)01644-9

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：

This work concerns the study of the crystal and magnetic structure of ThNiAlDx compounds (x=0.54, 1.23 and 1.33) by neutron diffraction. TbNiAlD0.54 is isostructural with TbNiAl. It undergoes two magnetic transitions at T-1=16 K and T-N=36 K, with magnetic structure similar to that of TbNiA1 below T-1=23 and T-N=45 K. ThNiAlD1.23 is in crystallography and magnetism comparable to ThNiAlD1.1. When the Tb2NiAl positions are occupied, an orthorhombic distortion is induced. This completely changes the magnetic ordering and could be explained by the easy magnetisation directions being perpendicular to the shortest Tb-Th distances. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：169 / 174

页数：6

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