Nuclear inelastic X-ray scattering of FeO to 48 GPa -: art. no. 255501

被引：56

作者：

Struzhkin, VV

Mao, HK

Hu, JZ

Schwoerer-Böhning, M

Shu, JF

Hemley, RJ

Sturhahn, W

Hu, MY

Alp, EE

Eng, P

Shen, GY

机构：

[1] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA

[2] Carnegie Inst Sci, Ctr High Pressure Res, Washington, DC 20015 USA

[3] Argonne Natl Lab, Adv Photon Source, HPCAT, Argonne, IL 60439 USA

[4] Univ Chicago, Chicago, IL 60637 USA

[5] Argonne Natl Lab, Adv Photon Source, GSECARS, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.87.255501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The partial density of vibrational states has been measured for Fe in compressed FeO (wustite) using nuclear resonant inelastic x-ray scattering. Substantial changes have been observed in the overall shape of the density of states close to the magnetic transition around 20 GPa from the paramagnetic (low pressure) to the antiferromagnetic (high pressure) state. The results indicate that strong magnetoelastic coupling in FeO is the driving force behind the changes in the phonon spectrum of FeO. The paper presents the first observation of changes in the density of terahertz acoustic phonon states under magnetic transition at high pressure.

引用

页码：255501 / 1

页数：4

共 34 条

[1] ANTIFERROMAGNETISM IN MNO - CALCULATION OF NEAR-NEIGHBOR SPIN CORRELATION FUNCTIONS FOR T LESS THAN TN [J].