Open AccessX‐ray magnetic spectroscopy at high pressure: performance of SPring‐8 BL39XU
Author(s) -
Kawamura Naomi,
Ishimatsu Naoki,
Maruyama Hiroshi
Publication year - 2009
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049509034700
Subject(s) - spring (device) , high pressure , spring 8 , spectroscopy , materials science , nuclear magnetic resonance spectroscopy , nuclear magnetic resonance , chemistry , physics , engineering physics , optics , thermodynamics , astronomy , beam (structure) , beamline
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 Mn 3 GaC and the pressure‐suppressed Co moment in ErCo 2 . Two technical developments, a tiny diamond anvil cell inserted into a superconducting magnet and in situ pressure calibration using 90° 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.