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2002•Unpublished venueRequires access

Theoretical studies of the EPR g factors and optical spectra for tetragonal Ce3+ centers in CaF2 and SrF2 crystals

Hui-Ning Dong, Shao-Yi Wu, Wen‐Chen Zheng

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Abstract

By using the irreducible tensor operator technique, the complete energy matrix including the admixture between J = 7/2 and J = 5/2 manifolds and the covalency reduction effect for 4(f1) ion in tetragonal symmetry is established. Based on this, the electron paramagnetic resonance (EPR) g factors for the tetragonal Ce3+ centers in CaF2 and SrF2 crystals are reasonably explained and some levels of the J = 5/2 manifold for these centres are estimated. The results are discussed.

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What this paper is about

By using the irreducible tensor operator technique, the complete energy matrix including the admixture between J = 7/2 and J = 5/2 manifolds and the covalency reduction effect for 4(f1) ion in tetragonal symmetry is established. Based on this, the electron paramagnetic resonance (EPR) g factors for the tetragonal Ce3+ centers in CaF2 and SrF2 crystals are reasonably explained and some levels of the J = 5/2 manifold for these centres are estimated. The results are discussed.

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Available abstract

By using the irreducible tensor operator technique, the complete energy matrix including the admixture between J = 7/2 and J = 5/2 manifolds and the covalency reduction effect for 4(f1) ion in tetragonal symmetry is established. Based on this, the electron paramagnetic resonance (EPR) g factors for the tetragonal Ce3+ centers in CaF2 and SrF2 crystals are reasonably explained and some levels of the J = 5/2 manifold for these centres are estimated. The results are discussed.

Key concepts: Electron paramagnetic resonance, Tetragonal crystal system, Tensor (intrinsic definition), Ion, Crystallography, Chemistry, Symmetry (geometry), Spectral line

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