Mössbauer study and electron transport properties in Co0.1Fe0.9Cr2S4

  • Sam Jin Kim
  • Woo Chul Kim
  • Jung Chul Sur
  • Chul Sung Kim
Conference paper


A sample of Co0.1Fe0.9Cr2S4 has been studied with Mössbauer spectroscopy, X-ray, SQUID magnetometer and magnetoresistance (MR). The crystal structure was determined to be cubic spinel with its lattice constant a0=9.9696 Å. The Mössbauer spectra were recorded from 12 K to room temperature. The asymmetric line broadening is observed and considered to be dynamic. Jahn-Teller distortion. The unusual reduction of magnetic hyperfine field below 100 K could be explained in terms of cancellation effect between the mutually opposite orbital current field (H L ) and Fermi contact field (H C ). The isomer shift value of the sample at room temperature was 0.58 mm/s, which means that the charge state of Fe ions was ferrous in character. The MR peak was observed at 192 K about 10 % at an applied field of 16 kOe. The conduction mechanism in this sample is different from the double exchange mechanism in a point that there were no mixed iron charge valences.


Electron Spin Resonance Isomer Shift Conduction Mechanism Quadrupole Splitting Magnetic Hyperfine Field 
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Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • Sam Jin Kim
    • 1
  • Woo Chul Kim
    • 1
  • Jung Chul Sur
    • 2
  • Chul Sung Kim
    • 1
  1. 1.Dept. of PhysicsKookmin UniversitySeoulKorea
  2. 2.Dept. of PhysicsWonkwang UniversityJeonbukKorea

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