Defect property correlations in garnet crystals. II. Electrical conductivity and optical absorption in Ca3Al2Ge3O12
- 15 June 1985
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 57 (12) , 5320-5324
- https://doi.org/10.1063/1.334848
Abstract
Electrical conductivity and ionic transference measurements performed at varying temperatures and partial pressures of oxygen show that CALGAR (Ca3Al2Ge3O12), a luminescent garnet, is a mixed ionic‐electronic conductor. An activation energy of 1 eV for ionic diffusion is measured. An absorption band at 400 nm, whose magnitude can be controlled by varying the annealing atmosphere, is attributed to an O− center.This publication has 6 references indexed in Scilit:
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