Chinese Journal of Magnetic Resonance ›› 2010, Vol. 27 ›› Issue (2): 249-253.

• Articles • Previous Articles     Next Articles

Interpretation of the Optical Spectra and Paramagnetic g Factor of LaAlO3: Cr3+ under Low Temperature and Normal Pressure

 ZHANG Ping , ZHANG Ji-Ping   

  1. College of Physical Science and Technology, Sichuan University, Chengdu 610064, China
  • Received:2009-11-02 Revised:2009-11-19 Online:2010-06-05 Published:2010-06-05

Abstract:

With the ligand field theory, a d3 complete energy matrix in the strong field scheme with trigonal bases was constructed, which include cubic crystal field, coulomb interactions, spin-orbit coupling and low-symmetry crystal field. The energy spectrum of LaAlO3: Cr3+ under low temperature and normal pressure was calculated with the matrix, and the corresponding parameters were obtained. The calculated spectrum was found to be in good agreement with experimental data. The calculated ground state g factor of LaAlO3: Cr3+ was also found to be consistent with the experimental values. With these results, the nature of the bonding interaction between Cr3+ and the ligands was discussed.

Key words: crystal field, energy spectrum, complete energy matrix, LaAlO3

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