Hydrogen absorption properties of CeNiAl: influence on its crystal structure and magnetic behaviour

被引：29

作者：

Bobet, JL ^{[1
]}

Chevalier, B ^{[1
]}

Darriet, B ^{[1
]}

Nakhl, M ^{[1
]}

Weill, F ^{[1
]}

Etourneau, J ^{[1
]}

机构：

[1] Univ Bordeaux 1, CNRS UPR 9048, ICMCB, F-33608 Pessac, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 317卷

关键词：

hydrogen sorption; X-ray powder diffraction; magnetization measurements;

D O I：

10.1016/S0925-8388(00)01358-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：

CeNiAl absorbs up to 1.93(5) hydrogen per formula unit at room temperature and at a pressure of 1 MPa. This hydride is stable in air. Hydrogenation induces both: (i) a structural transition hexagonal ZrNiAl-type --> hexagonal AlB2-type; (ii) a valence transition for cerium. At low temperature for T<7 ii, the hydride CeNiAlH1.93 shows a spin fluctuation behaviour. <(c)> 2001 Elsevier Science B.V. All rights reserved.

引用

页码：67 / 70

页数：4

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