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Title: Pressure induced spin transition revealed by iron M{sub 2,3}-edge spectroscopy

We present a method to characterize pressure induced magnetic high to low spin transition in iron sulphide using x-ray Raman scattering spectroscopy at the iron M{sub 2,3}-edge. The advantage of this method is that the observed spectral changes between pressures of 1.7 GPa and 10.1 GPa can be used with the help of atomic multiplet calculations to determine the crystal field splitting parameters associated with the spin transition. We discuss the potential of this M{sub 2,3}-edge spectroscopy to investigate the irons electronic spin state in-situ at the conditions of the inner Earth, i.e., at high temperature and high pressure, providing exciting opportunities for geophysical and materials science applications.
Authors:
; ; ; ;  [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. Fakultät Physik/DELTA, Technische Universität Dortmund, D-44221 Dortmund (Germany)
  2. Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2 (Canada)
  3. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)
  4. Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5 (Canada)
  5. Deutsches GeoForschungsZentrum, Section 3.3, D-14473 Potsdam (Germany)
Publication Date:
OSTI Identifier:
22303897
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 26; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL FIELD; IRON; IRON SULFIDES; PRESSURE RANGE GIGA PA; RAMAN EFFECT; RAMAN SPECTRA; SCATTERING; SPECTROSCOPY; SPIN; X RADIATION