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Title: Investigation of a Spin Transition in a LaCoO3 Single Crystal by the Method of X-Ray Magnetic Circular Dichroism at the Cobalt K- and L2,3-Edges

Journal Article · · Physics of the Solid State
 [1];  [2];  [2];  [3];  [3];  [4];  [5];  [6];  [6];  [6];  [6]
  1. Joint Institute for Nuclear Research, Moscow oblast (Russia); Immanuel Kant Baltic Federal Univ., Kaliningrad (Russia)
  2. National Academy of Sciences of Belarus, Minsk (Belarus)
  3. European Synchrotron Radiation Facility (ESRF), Grenoble Cedex (France)
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  5. Univ. of Oxford, Oxford (United Kingdom)
  6. Joint Institute for Nuclear Research, Moscow oblast (Russia)

Here, the spin transitions of cobalt ions in LaCoO3 single crystals have been studied by the method of X-ray magnetic circular dichroism (XMCD) at the K- and L2,3-edges of Co3+ ions. The orbital momentum of cobalt ions obtained for the K-edge at the 3d level in the region of the spin transition in the temperature range from 25 to 120 K increases by a factor of approximately 1.6, whereas the slope of the magnetization curve value in the same temperature range and magnetic field increases by a factor of more than 10. XMCD experiments at the cobalt L2,3)-edges demonstrate gradual growth of the ratio of the orbital momentum to the spin one L/S from 0.48 to 0.53 in the temperature range from 60 K to 120 K.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
Russian Foundation for Basic Research; Joint Institute for Nuclear Research (JINR); USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1477189
Journal Information:
Physics of the Solid State, Vol. 60, Issue 2; ISSN 1063-7834
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (5)