Pressure-induced magnetization in FeO: Evidence from elasticity and Mossbauer spectroscopy

被引：47

作者：

Kantor, AP ^{[1
]}

Jacobsen, SD

Kantor, IY

Dubrovinsky, LS

McCammon, CA

Reichmann, HJ

Goncharenko, IN

机构：

[1] Bayer Geoinst, D-95440 Bayreuth, Germany

[2] Moscow MV Lomonosov State Univ, Dept Crystallog & Crystal Chem, Moscow 119992, Russia

[3] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA

[4] Geoforschungszentrum Potsdam, Sect 4 1, D-14473 Potsdam, Germany

[5] CEA Saclay, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 21期

基金：

俄罗斯基础研究基金会; 美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.215502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The complete elastic tensor of Fe0.94O (wustite) has been determined to 10 GPa using acoustic interferometry at GHz frequencies inside a diamond-anvil cell. The soft mode (C-44) elastic constant of FeO is reduced by 20% over the experimental pressure range. An unusual discontinuity in the pressure derivatives of C-11 and C-12 at 4.7+/-0.2 GPa corresponds to the pressure at which the onset of a magnetic ordering transition is observed by high-pressure Mossbauer spectroscopy and neutron powder diffraction. Our new results combined with literature structural high P-T data suggest that there is a magnetic, although still cubic, phase of FeO between similar to5 and similar to17 GPa.

引用

页数：4

共 27 条

[1] Applications of impulsive stimulated scattering in the earth and planetary sciences [J].