Magnetism in FeO at megabar pressures from X-ray emission spectroscopy

被引：146
作者：
Badro, J
Struzhkin, VV
Shu, JF
Hemley, RJ
Mao, HK
Kao, CC
Rueff, JP
Shen, GY
机构：
[1] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA
[2] Carnegie Inst Washington, Ctr High Pressure Res, Washington, DC 20015 USA
[3] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA
[4] Univ Chicago, GSECARS, Chicago, IL 60637 USA
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 20期
关键词：
D O I：
10.1103/PhysRevLett.83.4101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report evidence for a preserved magnetic state in FeO up to 143 GPa at room temperature using high-resolution x-ray emission spectroscopy. This observation is based on the spectral line shape of the Fe K beta emission line. Up to the highest pressure, FeO remains a magnetic insulator. Combining our results with previous Mossbauer data, we present a new magnetic phase diagram of FeO. Features like a closed-loop P-T antiferromagnetic domain confirm that high-pressure investigations can reveal new physical properties and unexpected phenomena.
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收藏
页码：4101 / 4104
页数：4
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