Near infra-red luminescence of BaTiO3:Cr

被引：10

作者：

Eden, S

Kapphan, S ^{[1
]}

Hesse, H

Trepakov, V

Vikhnin, V

Jastrabík, L

Gregora, I

机构：

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

[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[3] Acad Sci Czech Republ, Inst Phys, CZ-18040 Prague 8, Czech Republic

来源：

RADIATION EFFECTS AND DEFECTS IN SOLIDS | 1999年 / 149卷 / 1-4期

关键词：

BaTiO3 : Cr; absorption; luminescence; luminescence lifetime; lineshape;

D O I：

10.1080/10420159908230141

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：

It was round that Cr in BaTiO3 crystals reveals a characteristic luminescence with four sharp emission lines at 781.6 (A(1)), 776.4 (A(2)), 768.8 (A(3)) and 766.8 nm (A(4)) foT 74 K. Considering EPR data, temperature- and lifetime behaviour, the A(3) and A(4) lines are interpreted to be R-1,R-2-lines originating from zero-phonon E-2 --> (4)A(2) transitions of octahedral Cr3+ replacing Ti4+. The A(1,2) emission lines may originate from Cr3+ exchange coupled with an unknown compensating defect. It is remarkable that the inhomogeniously broadened A-lines are well described by Lorentz curves at low temperatures, with halfwidth (FWHM about 10 cm(-1)) depending hardly on the temperature.

引用

页码：107 / 112

页数：6

共 16 条

[1] Observations of the absorption, infra-red emission, and excitation spectra of Cr in BaTiO3 [J].