Structural and electrical transport properties of FeHx under high pressures and low temperatures

被引：7

作者：

Matsuoka, Takahiro ^{[1
]}

Hirao, Naohisa ^{[1
]}

Ohishi, Yasuo ^{[1
]}

Shimizu, Katsuya ^{[2
]}

Machida, Akihiko ^{[3
]}

Aoki, Katsutoshi ^{[3
]}

机构：

[1] Japan Synchrotron Radiat Res Inst JASRI SPring 8, Div Mat Sci, Sayo, Hyogo 6795198, Japan

[2] Osaka Univ, Ctr Quantum Sci & Technol Extreme Condit, KYOKUGEN, Osaka 5608531, Japan

[3] JAEA, Sayo, Hyogo 6795198, Japan

来源：

HIGH PRESSURE RESEARCH | 2011年 / 31卷 / 01期

关键词：

iron-hydride; electrical resistance; X-ray diffraction; diamond anvil cell; magnetism; structural transition; IRON HYDRIDE; SUPERCONDUCTIVITY; TRANSITION; HYDROGEN;

D O I：

10.1080/08957959.2010.522447

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first successful in situ simultaneous measurement of the electrical resistance and X-ray diffraction of FeHx (x 1) under high-pressure H2 up to 25.5GPa and low temperatures down to 9K. The electrical resistivity showed a sharp increase with the formation of iron-hydride FeHx (x 1) at 3.5GPa. The epsilon'-phase of FeHx was found to be metallic up to 25.5GPa. The vs. T curves up to 16.5GPa approximately follow Fermi-liquid law below 25K. However, T5 was found to be better fitting at 25.5GPa. This change can be considered to be related to the previously reported ferromagnetism collapse at corresponding pressure.

引用

页码：64 / 67

页数：4

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