PREPARATION AND PHYSICAL-PROPERTIES OF RARE-EARTH, ALKALINE-EARTH, AND TRANSITION-METAL TERNARY CHALCOGENIDES

Authors
GEORGOBIANI AN DZHABBAROV RB IZZATOV BM MUSAEVA NN SULTANOV FN TAGIEV BG TAGIEV OB
Citation
An. Georgobiani et al., PREPARATION AND PHYSICAL-PROPERTIES OF RARE-EARTH, ALKALINE-EARTH, AND TRANSITION-METAL TERNARY CHALCOGENIDES, Inorganic materials, 33(2), 1997, pp. 148-152
Citations number
13
Categorie Soggetti
Material Science
Journal title
Inorganic materials → ACNP
ISSN journal
00201685
Volume
33
Issue
2
Year of publication
1997
Pages
148 - 152
Database
ISI
SICI code
0020-1685(1997)33:2<148:PAPORA>2.0.ZU;2-J
Abstract
Current-voltage characteristics, temperature-dependent electrical cond uctivity, and thermally activated depolarization currents were measure d for single crystals of CaGa2S4, CaIn2S4, EuGa2S4, MnGa2Se4, and (Ga2 S3)(1-x)(Eu2O3)(x). The photoconductivity spectra of MnGa2Se4 and PbGa 2Se4 were obtained at different temperatures and electric fields. Char ge transport in the chalcogenides studied is due to monopolar injectio n at low injection levels (10(2)-10(3) V/cm) and to the Pool-Frenkel e ffect in electric fields stronger than 10(3) V/cm. The photoluminescen ce of these materials is associated with transitions on the Eu2+, Ce3, Mn2+, and Yb2+ ions.