Abstract
The absorption, luminescence, and circular dichroism spectra of a cobalt-doped La3Ga5SiO14 crystal (Ca3Ga2Ge4O14 structure, sp. gr. P321) have been studied in the range 8–300 K. The Co2+ ion has been shown to occupy the 3f tetrahedral site. For T 220 K, the 2E(2G) state is completely quenched, and only luminescence from the 4T1(4P) level is observed.
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