Magnetic States in Fe, Co, Ni hydrides under High Pressure Probed by X-ray Magnetic circular dichroism
Magnetic States in Fe, Co, Ni hydrides under High Pressure Probed by X-ray Magnetic circular dichroism
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X射线磁圆二色性探测高压下Fe、Co、Ni氢化物的磁态
DOI：
10.1088/1742-6596/377/1/012041
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
N. Ishimatsu
中科院分区：
文献类型：
--
作者：
N. Ishimatsu;T. Shichijo;Y. Matsushima;H. Maruyama;N. Kawamura;M. Mizumaki;T. Matsuoka;and K. Takemura;N. Ishimatsu;N. Ishimatsu
利用x射线磁圆二色性（XMCD）在k边研究了Fe、Co和Ni氢化物在压力下的磁态。在室温下，Fe、Co和Ni金属分别氢化成铁磁性FeH、铁磁性CoH和顺磁性NiH。氢化后观察到一个明显的XMCD轮廓，这归因于氢诱导的电子结构重建。XMCD的压力依赖性表明，FeH的铁磁态在压力下不如CoH的铁磁态稳定。
Magnetic states of Fe, Co, and Ni hydrides under pressure have been investigated by X-ray magnetic circular dichroism (XMCD) at the K-edge. At room temperature, Fe, Co, and Ni metals are hydrogenated to ferromagnetic FeH, ferromagnetic CoH, and paramagnetic NiH, respectively. A sharp XMCD profile is observed after hydrogenation, which is attributed to the hydrogen-induced reconstruction of the electronic structure. The pressure dependence of XMCD demonstrates that the ferromagnetic state of FeH is less stable than that of CoH under pressure.