Defect property correlations in garnet crystals. II. Electrical conductivity and optical absorption in Ca3Al2Ge 3O12

S. R. Rotman; H. L. Tuller; M. Roth; A. Linz

doi:10.1063/1.334848

Defect property correlations in garnet crystals. II. Electrical conductivity and optical absorption in Ca₃Al₂Ge ₃O₁₂

S. R. Rotman
, H. L. Tuller
, M. Roth
, A. Linz

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Electrical conductivity and ionic transference measurements performed at varying temperatures and partial pressures of oxygen show that CALGAR (Ca ₃Al₂Ge₃O₁₂), 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.

Original language	English
Pages (from-to)	5320-5324
Number of pages	5
Journal	Journal of Applied Physics
Volume	57
Issue number	12
DOIs	https://doi.org/10.1063/1.334848
State	Published - 1 Jan 1985
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.334848

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title = "Defect property correlations in garnet crystals. II. Electrical conductivity and optical absorption in Ca3Al2Ge 3O12",

abstract = "Electrical conductivity and ionic transference measurements performed at varying temperatures and partial pressures of oxygen show that CALGAR (Ca 3Al2Ge3O12), 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.",

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AU - Rotman, S. R.

AU - Tuller, H. L.

AU - Roth, M.

AU - Linz, A.

PY - 1985/1/1

Y1 - 1985/1/1

N2 - Electrical conductivity and ionic transference measurements performed at varying temperatures and partial pressures of oxygen show that CALGAR (Ca 3Al2Ge3O12), 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.

AB - Electrical conductivity and ionic transference measurements performed at varying temperatures and partial pressures of oxygen show that CALGAR (Ca 3Al2Ge3O12), 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.

UR - https://www.scopus.com/pages/publications/33645961967

U2 - 10.1063/1.334848

DO - 10.1063/1.334848

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JF - Journal of Applied Physics

IS - 12

ER -

Defect property correlations in garnet crystals. II. Electrical conductivity and optical absorption in Ca₃Al₂Ge ₃O₁₂

Abstract

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