Magnetic properties and crystal structure of HoNiAl and UNiAl hydrides
Magnetic properties and crystal structure of HoNiAl and UNiAl hydrides
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HoNiAl和UNiAl氢化物的磁性和晶体结构
DOI：
10.1063/1.372851
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发表时间：
2000
影响因子：
3.2
通讯作者：
L. DeLong
中科院分区：
文献类型：
--
作者：
A. Kolomiets;L. Havela;D. Rafaja;H. Bordallo;H. Nakotte;V. Yartys;B. Hauback;H. Drulis;W. Iwasieczko;L. DeLong
在HoNiAlH2.0、UNiAlH2.3和UNiAlD2.1上研究了加氢对4f和5f金属间化合物磁性和晶体结构的影响。在UNiAl-H体系中，氢的加入导致磁性有序温度从13 K下降到6 K，而从19 K上升到90-100 K。所有化合物的晶格都是各向异性扩展的。此外，在HoNiAlH2.0中，晶体对称性降低到正方晶形，而在UNiAlH(D)x中仍然保持六方晶形。在这两种化合物中都发现了三个不同的氘位置。
The effect of hydrogenation on the magnetic properties and crystal structure of 4f and 5f intermetallics was studied on HoNiAlH2.0, UNiAlH2.3 and UNiAlD2.1. The incorporation of hydrogen into HoNiAl leads to a decrease of the magnetic ordering temperature from 13 to 6 K, while it increases from 19 K to values in the range 90–100 K in the UNiAl–H system. The crystal lattices of all compounds are anisotropically expanded. Moreover, the crystal symmetry is lowered to orthorhombic in HoNiAlH2.0, but remains hexagonal for UNiAlH(D)x. Three different deuterium positions were found for both compounds.