PREPARATION AND FUNDAMENTAL PHYSICAL-PROPERTIES OF THE QUATERNARY CHALCOGENIDES SNBI4-XTE3-Z AND PBBI4-XTE3-YSE4-Z(YSE4)

Authors
KICHAMBARE P SHARON M SEKI Y HAGINO T NAGATA S
Citation
P. Kichambare et al., PREPARATION AND FUNDAMENTAL PHYSICAL-PROPERTIES OF THE QUATERNARY CHALCOGENIDES SNBI4-XTE3-Z AND PBBI4-XTE3-YSE4-Z(YSE4), Solid state ionics, 101, 1997, pp. 125-129
Citations number
8
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
101
Year of publication
1997
Part
1
Pages
125 - 129
Database
ISI
SICI code
0167-2738(1997)101:<125:PAFPOT>2.0.ZU;2-4
Abstract
The quaternary chalcogenides SnBi4-xTe3+ySe4-z and PbBi4-xTe3-ySe4-z h ave been prepared and found to possess orthorhombic structure. The che mical composition of materials is confirmed by EDX. SnBi4-xTe3+ySe4-z and PbBi4-xTe3-ySe4-z exhibit a low resistivity 0.0055 ohm cm and 0.16 65 ohm cm at room temperature and carrier concentration 7.15 x 10(18) and 1.97 x 10(16) cm(-3) respectively. The Hall measurements show n-ty pe behaviour with mobility of carrier 87 and 2534 M-2/V, and band gap by diffuse reflectance are found to be 4.37 eV and 3.98 eV for SnBi4-x Te3+ySe4-z and PbBi4-xTe3-ySe4-z respectively.