Pressure-Induced Magnetic Transition in Fe4N Probed by Fe K-edge XMCD Measurement
Pressure-Induced Magnetic Transition in Fe4N Probed by Fe K-edge XMCD Measurement
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通过 Fe K 边缘 XMCD 测量探测 Fe4N 中压力诱导的磁转变
DOI：
10.1143/jpsj.72.2372
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发表时间：
2003
影响因子：
1.7
通讯作者：
O. Shimomura
中科院分区：
文献类型：
--
作者：
N. Ishimatsu;H. Maruyama;N. Kawamura;M. Suzuki;Y. Ohishi;M. Ito;S. Nasu;T. Kawakami;O. Shimomura
在27 GPa的高压下，在Fe的K边记录了γ ′-氮化铁（Fe 4 N）的X射线磁性圆二色性（XMCD）。随着压力的增加，XMCD强度显著降低，在24 GPa时基本消失.通过X射线衍射法测量压缩性。这些结果表明，Fe 4 N经历了从铁磁态到顺磁态的二级相变，而没有任何结构变化。根据局域环境中Fe的磁态讨论了压力引起的退磁过程。
X-ray magnetic circular dichroism (XMCD) of γ'-iron nitride (Fe 4 N) was recorded at Fe K -edge under high pressue up to 27 GPa. The XMCD intensity decreased remarkably with pressure, and vanished at 24 GPa. Compressibility was measured by the X-ray diffraction method. These results indicate that Fe 4 N undergoes a second-order phase transition from the ferromagnetic state to a paramagnetic state without any structural change. The pressure-induced demagnetizing process is discussed in terms of the Fe magnetic states in the local environment.
影响因子：
8.6
作者：
Rueff, JP;Kao, CC;Hao, HK
通讯作者：
Hao, HK