Spectroscopic evidence for defect structure in irradiated PbWO4 single crystal

Authors
Li, WS Tang, TB
Citation
Ws. Li et Tb. Tang, Spectroscopic evidence for defect structure in irradiated PbWO4 single crystal, PROG CRYST, 40(1-4), 2000, pp. 177-182
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS
ISSN journal
09608974 → ACNP
Volume
40
Issue
1-4
Year of publication
2000
Pages
177 - 182
Database
ISI
SICI code
0960-8974(2000)40:1-4<177:SEFDSI>2.0.ZU;2-J
Abstract
PbWO1 has recently attracted much attention because of its scintillation ap plications. We have measured its dielectric response subsequent to Ar+ and UV irradiation, respectively. Dielectric relaxation was observed, which we attribute to a complex color center in the WO4-2 tetrahedron. The complex c olor center in turn led to the distortion of the WO4-2 tetrahedron, which d egeneracies were removed. was verified by FTIR spectra showing that the nu( 3) and nu(4) degeneracies were removed.