Volume 179, Issue 1 pp. 249-260

Original Paper

Oxidation/Reduction Effects on the Thermoluminescence of α-Al₂O₃ Single Crystals

G. Molnár,

G. Molnár

[email protected]

Eötvös Loránd University, Department of General and Inorganic Chemistry, H-1518 Budapest 112, Pf-32, Hungary

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J. Borossay,

J. Borossay

Eötvös Loránd University, Department of General and Inorganic Chemistry, H-1518 Budapest 112, Pf-32, Hungary

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M. Benabdesselam,

M. Benabdesselam

LPES-CRESA (EA 1174),Université de Nice-Sophia Antipolis, F-06108 Nice cedex 2, Parc Valrose, France

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P. Iacconi,

P. Iacconi

LPES-CRESA (EA 1174),Université de Nice-Sophia Antipolis, F-06108 Nice cedex 2, Parc Valrose, France

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D. Lapraz,

D. Lapraz

LPES-CRESA (EA 1174),Université de Nice-Sophia Antipolis, F-06108 Nice cedex 2, Parc Valrose, France

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K. Süvegh,

K. Süvegh

Eötvös Loránd University, Department of Nuclear Chemistry, H-1518 Budapest 112, Pf-32, Hungary

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A. Vértes,

A. Vértes

Eötvös Loránd University, Department of Nuclear Chemistry, H-1518 Budapest 112, Pf-32, Hungary

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G. Molnár,

G. Molnár

[email protected]

Eötvös Loránd University, Department of General and Inorganic Chemistry, H-1518 Budapest 112, Pf-32, Hungary

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J. Borossay,

J. Borossay

Eötvös Loránd University, Department of General and Inorganic Chemistry, H-1518 Budapest 112, Pf-32, Hungary

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M. Benabdesselam,

M. Benabdesselam

LPES-CRESA (EA 1174),Université de Nice-Sophia Antipolis, F-06108 Nice cedex 2, Parc Valrose, France

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P. Iacconi,

P. Iacconi

LPES-CRESA (EA 1174),Université de Nice-Sophia Antipolis, F-06108 Nice cedex 2, Parc Valrose, France

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D. Lapraz,

D. Lapraz

LPES-CRESA (EA 1174),Université de Nice-Sophia Antipolis, F-06108 Nice cedex 2, Parc Valrose, France

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K. Süvegh,

K. Süvegh

Eötvös Loránd University, Department of Nuclear Chemistry, H-1518 Budapest 112, Pf-32, Hungary

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A. Vértes,

A. Vértes

Eötvös Loránd University, Department of Nuclear Chemistry, H-1518 Budapest 112, Pf-32, Hungary

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First published: 14 June 2000

https://doi.org/10.1002/1521-396X(200005)179:1<249::AID-PSSA249>3.0.CO;2-B

Citations: 20

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Abstract

α-Al₂O₃ crystals were treated in different atmospheres (reducing/oxidising) at high temperature and their optical, positron-annihilation and thermoluminescent (TL) properties were investigated. From optical absorption and positron-annihilation spectra we concluded that aluminium-vacancies were created while oxygen-vacancies were destroyed in oxidised samples indicating a Schottky-type disorder. Structural changes were correlated with TL glow curves and the origin of some TL peaks was explained.

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Volume179, Issue1

May 2000

Pages 249-260

Oxidation/Reduction Effects on the Thermoluminescence of α-Al₂O₃ Single Crystals

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Oxidation/Reduction Effects on the Thermoluminescence of α-Al₂O₃ Single Crystals