X-ray magnetic spectroscopy at high pressure: performance of SPring-8 BL39XU

被引：44

作者：

Kawamura, Naomi ^{[1
]}

Ishimatsu, Naoki ^{[2
]}

Maruyama, Hiroshi ^{[2
]}

机构：

[1] Japan Synchrotron Radiat Res Inst SPring 8, Sayo, Hyogo 6795198, Japan

[2] Hiroshima Univ, Grad Sch Sci, Dept Phys Sci, Hiroshima 7398526, Japan

来源：

JOURNAL OF SYNCHROTRON RADIATION | 2009年 / 16卷

关键词：

X-ray magnetic circular dichroism; multiple extreme conditions; high pressure; diamond anvil cell; in situ pressure calibration; Mn3GaC; ErCo2; FE72PT28 INVAR ALLOY; CIRCULAR-DICHROISM; PHASE-TRANSITION; RARE-EARTH; EDGE XMCD; MN3GAC; POLARIZATION; MOMENT; IRON;

D O I：

10.1107/S0909049509034700

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

An X-ray magnetic circular dichroism experiment under multiple extreme conditions, 2 <= T <= 300 K, H <= 10 T and P <= 50 GPa, has been achieved at SPring-8 BL39XU. A combination of the high-brilliant X-ray beam and a helicity-controlled technique enabled the dichroic signal to be recorded with high accuracy. The performance is shown by the outcome of pressure-induced ferromagnetism in Mn3GaC and the pressure-suppressed Co moment in ErCo2. Two technical developments, a tiny diamond anvil cell inserted into a superconducting magnet and in situ pressure calibration using 90 degrees Bragg diffraction from a NaCl marker, are also presented. X-ray magnetic spectroscopy under multiple extreme conditions is now opening a new approach to materials science.

引用

页码：730 / 736

页数：7

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