Publication
Physical Review B
Paper

Excited-state absorption cross sections for the Cr3+ ion in MgO and spinel

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Abstract

We have calculated numerically the magnetic dipole absorption cross sections for the excited-state transitions t23 E2t23 T22 and t23 T1223 T22 in centrosymmetric MgO:Cr3+ and MgAl2O4: Cr3+. This was done by using a parametrized ligand-field model in which the parameters are determined by the zero-field energies. The dominant contribution to the E2T22 absorption comes from Coulomb admixture of t22 e and t23 terms, whereas the spin-orbit interaction contributes substantially to the T12T22 cross section. The values obtained provide a reliable guide to the assignment of recent E2T22 excited-state absorption measurements in MgO:Cr3+. © 1971 The American Physical Society.

Date

01 Apr 1971

Publication

Physical Review B

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