Thermal- and photo-induced transformations of luminescence centers in αd-Al2O3 anion-defective crystals

被引：33

作者：

Solov'ev, S. V. ^{[1
]}

Milman, I. I. ^{[1
]}

Syurdo, A. I. ^{[2
]}

机构：

[1] Ural State Tech Univ UPI, Yeltsin Ural Fed Univ, Ekaterinburg 620002, Russia

[2] Russian Acad Sci, Inst Ind Ecol, Ural Branch, Ekaterinburg 620219, Russia

来源：

PHYSICS OF THE SOLID STATE | 2012年 / 54卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

OPTICAL-PROPERTIES; DEEP TRAPS; F+-CENTERS; PHOTOCONVERSION; ALPHA-AL2O3; MODEL;

D O I：

10.1134/S1063783412040270

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The thermal- and photo-induced transformations of luminescence centers in anion-defective crystals of alpha-Al2O3 have been investigated. It has been found that the exposure of crystals to ultraviolet light at temperatures in the range 50-900A degrees C leads to substantial changes in their thermoluminescence and radioluminescence spectra. According to the optical absorption and photoluminescence data, the detected F-type centers have been identified and the temperature ranges of the F -> F (+) -> F (2) transformations and their possible mechanisms have been determined. The special attention has been drawn to the detailed similarity in the formation of complex F (2)-type centers in the initially perfect alpha-Al2O3 crystals irradiated with fast neutrons and in the studied anion-defective crystals.

引用

页码：726 / 734

页数：9

共 22 条

[1] Memory effects and systematic errors in the RL signal from fiber coupled Al2O3:C for medical dosimetry [J].

Damkjaer, S. M. S. ;

Andersen, C. E. .

RADIATION MEASUREMENTS, 2010, 45 (3-6) :671-673

[2] A REVIEW OF THE OPTICAL-PROPERTIES OF ANION LATTICE VACANCIES, AND ELECTRICAL-CONDUCTION IN ALPHA-AL2O3 - THEIR RELATION TO RADIATION-INDUCED ELECTRICAL DEGRADATION [J].

EVANS, BD .

JOURNAL OF NUCLEAR MATERIALS, 1995, 219 :202-223

[3] Reversible Photoinduced Interconversion of Color Centers in α-Al2O3 Prepared under Vacuum [J].

Itou, M. ;

Fujiwara, A. ;

Uchino, T. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (49) :20949-20957

[4] Absorption and photoluminescence study of Al2O3 single crystal irradiated with fast neutrons [J].

Izerrouken, M. ;

Benyahia, T. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2010, 268 (19) :2987-2990

[5] Deep-trap competition model for TL in α-Al2O3:C heating stage [J].

Kortov, V. S. ;

Milman, I. I. ;

Moiseykin, E. V. ;

Nikiforov, S. V. ;

Ovchinnikov, M. M. .

RADIATION PROTECTION DOSIMETRY, 2006, 119 (1-4) :41-44

[6] Mechanism of F-center luminescence in anion-defective aluminum oxide single crystals [J].

Kortov, VS ;

Mil'man, II ;

Nikiforov, SV ;

Pelenev, VE .

PHYSICS OF THE SOLID STATE, 2003, 45 (07) :1260-1266

[7] Conversion of F⇆ F+ centers in anion-defective corundum crystals [J].

Kurtov, VS ;

Mil'man, II ;

Slesarev, AI .

TECHNICAL PHYSICS LETTERS, 1999, 25 (10) :786-788

[8] Optically stimulated luminescence: A brief overview [J].

McKeever, S. W. S. .

RADIATION MEASUREMENTS, 2011, 46 (12) :1336-1341

[9] The role of deep traps in luminescence of anion-defective α-Al2O3: C crystals [J].

Mil'man, I. I. ;

Moiseikin, E. V. ;

Nikiforov, S. V. ;

Solov'ev, S. V. ;

Revkov, I. G. ;

Litovchenko, E. N. .

PHYSICS OF THE SOLID STATE, 2008, 50 (11) :2076-2080

[10]

Mohammad R. A. Z. M., 2010, RADIAT EFF DEFECT S, V165, P290

← 1 2 3 →