Light-induced charge transport in photorefractive BaTiO3:Fe and Ba0.77Ca0.23TiO3:Fe

被引：9

作者：

Mazur, A ^{[1
]}

Veber, C ^{[1
]}

Schirmer, OF ^{[1
]}

Kuper, C ^{[1
]}

Hesse, H ^{[1
]}

机构：

[1] Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany

来源：

RADIATION EFFECTS AND DEFECTS IN SOLIDS | 1999年 / 150卷 / 1-4期

关键词：

BaTiO3; Ba1-xCaxTiO3; EPR; optical absorption; perovskite and photorefractive materials;

D O I：

10.1080/10420159908226244

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Photorefractive barium titanate and barium-calcium titanate crystals with the congruently melting composition (Ba0.77Ca0.23TiO3) doped with iron are annealed in a hydrogen atmosphere at various temperatures. The samples are studied with electron paramagnetic resonance (EPR) and optical absorption both performed separately as well as simultaneously before and after illumination. The samples are electron conductive and the charge Fe2+/3+ at room temperature ir governed by only one level identified by photo-EPR as The optical absorption of Fe2+ in BaTiO3:Fe is found to be at 2.1 eV and in (Ba0.77Ca0.23TiO3) Fe at 1.9 eV.

引用

页码：281 / 286

页数：6

共 10 条

[1] INTENSITY-DEPENDENT ABSORPTION AND PHOTOREFRACTIVE EFFECTS IN BARIUM-TITANATE
BROST, GA
MOTES, RA
ROTGE, JR
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1988, 5 (09) : 1879 - 1885
[2] GUNTER P, 1988, TOPICS APPL PHYSICS, V61
[3] GUNTER P, 1988, TOPICS APPL PHYSICS, V62
[4] HOLTMANN L, 1989, PHYS STATUS SOLIDI A, V113, P89
[5] LIGHT-INDUCED CHARGE TRANSPORT IN DOPED LINBO3 AND LITAO3
KRATZIG, E
ORLOWSKI, R
[J]. FERROELECTRICS, 1980, 27 (1-4) : 241 - 244
[6] A multichannel spectrometer for correlated EPR-optical absorption analysis of photochromic processes in crystals
Krose, H
Scharfschwerdt, R
Mazur, A
Schirmer, OF
[J]. APPLIED PHYSICS B-LASERS AND OPTICS, 1998, 67 (01): : 79 - 86
[7] Growth and dielectric properties of congruently melting Ba1-xCaxTiO3 crystals
Kuper, C
Pankrath, R
Hesse, H
[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1997, 65 (03): : 301 - 305
[8] Optical absorption and light-induced charge transport of Fe2+ in BaTiO3
Mazur, A
Schirmer, OF
Mendricks, S
[J]. APPLIED PHYSICS LETTERS, 1997, 70 (18) : 2395 - 2397
[9] Oxygen vacancies in BaTiO3
Scharfschwerdt, R
Mazur, A
Schirmer, OF
Hesse, H
Mendricks, S
[J]. PHYSICAL REVIEW B, 1996, 54 (21): : 15284 - 15290
[10] THE ROLE OF IMPURITIES IN INSULATING TRANSITION-METAL OXIDES
SMYTH, DM
[J]. PROGRESS IN SOLID STATE CHEMISTRY, 1984, 15 (03) : 145 - 171

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