Synthesis and characterization of Ba3Bi6.67Se13 and its filled variants Ba3Bi6PbSe13 and Ba3Bi6SnSe13

Authors
Wang, YC DiSalvo, FJ
Citation
Yc. Wang et Fj. Disalvo, Synthesis and characterization of Ba3Bi6.67Se13 and its filled variants Ba3Bi6PbSe13 and Ba3Bi6SnSe13, CHEM MATER, 12(4), 2000, pp. 1011-1017
Citations number
49
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
CHEMISTRY OF MATERIALS
ISSN journal
08974756 → ACNP
Volume
12
Issue
4
Year of publication
2000
Pages
1011 - 1017
Database
ISI
SICI code
0897-4756(200004)12:4<1011:SACOBA>2.0.ZU;2-D
Abstract
The three title compounds were synthesized at 710 degrees C and their struc ture type is isotypic to Sr4Bi6Se13 and beta-K2Bi8Se13. The compounds cryst allize in P2(1)/m (Z = 2) with a = 17.2228(6) (6) Angstrom, b = 4.2729(1) A ngstrom, c = 18.4659(6) Angstrom, beta = 90.720(0)degrees for Ba3Bi6.67Se13 ; a = 17.2427(4) Angstrom, b = 4.2736(1) Angstrom, c = 18.4560(4) Angstrom, beta = 90.861(1)degrees for Ba3Bi6PbSe13; and a = 17.2498(5) Angstrom, b = 4.2912(1) Angstrom, c = 18.4590(5) Angstrom, and beta = 90.679(1)degrees f or Ba3Bi6SnSe13. The coordination environments of Bi/Pb/Sn are distorted Se octahedra, while the coordination spheres of Ba are bi- or tricapped trigo nal prisms. Transport measurements indicate that Ba3Bi6.67Se13 and Ba3Bi6Pb Se13 are semiconducting.