Influence of hydrogenation on magnetic interactions in intermetallic RNi (R = Gd, Tb, Dy) compounds

被引：10
|
作者：
Iwasieczko, W. [2 ]
Drulis, H. [2 ]
Yaropolov, Yu L. [1 ]
Nikitin, S. A. [1 ]
Verbetsky, V. N. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
[2] Polish Acad Sci, W Trzebiatowski Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷
关键词：
Rare earth compounds; Metal hydrides; Magnetic measurements; CRYSTALLINE LATTICE; NITROGEN-ATOMS; PHASE-DIAGRAM; NICKEL; TRANSFORMATIONS; INSERTION;
D O I：
10.1016/j.jallcom.2010.10.140
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 influence of hydrogenation on the magnetic properties of intermetallic compound RNi is reported. GdNiH(3.2), TbNiH(3.4), DyNiH(3.4) hydrides have been synthesized and their magnetic properties were investigated in the temperature range 1.8-300 K. It was established that hydrogen absorption in these compounds makes the ferro- and antiferromagnetic interactions between magnetic moments much weaker. The reasons of this phenomenon are discussed. The hydrogen presence at interstitial positions also changes the symmetry of the crystal electric field at the rare earth ion sites making this symmetry higher than those in initial intermetallics. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：S827 / S829
页数：3
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