A STUDY OF THE PHASES IN THE BISMUTH - TELLURIUM SYSTEM

被引：141

作者：

FEUTELAIS, Y

LEGENDRE, B

RODIER, N

AGAFONOV, V

机构：

[1] FAC PHARM CHATENAY MALABRY,CHIM MINERALE & CRISTALLOG LAB,F-92296 CHATENAY MALABRY,FRANCE

[2] FAC PHARM TOURS,CHIM GEN LAB,F-37042 TOURS,FRANCE

来源：

MATERIALS RESEARCH BULLETIN | 1993年 / 28卷 / 06期

关键词：

BISMUTH; TELLURIUM; TELLURIDES;

D O I：

10.1016/0025-5408(93)90055-I

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bi2Te3 crystallizes in rhombohedral system, space group R3mBAR. The hexagonal cell, a = 4.395(3) angstrom and c = 30.44(1) angstrom, contains three formula units. D(x) = 7.83 Mgm-3, mu = 64.17mm-1. Its structure, refined from a single crystal, consists of 15 layers stacked along the ''c-axis'' and presents the combination of 3-layer stacks of (TeBiTeBiTe) composition. The coordination polyhedron of each atom is a distorted octahedron. The comparison of calculated and observed powder diffraction patterns allowed us to put in evidence a texture effect. A single crystal of the new phase Bi8Te9 has been obtained by thermal annealing. Preliminary diffraction study shows an hexagonal lattice with a = 4.41 angstrom and c almost-equal-to 103 angstrom. A model of structure is proposed.

引用

页码：591 / 596

页数：6

共 11 条

[1]

ABRIKOSOV NK, 1958, ZH NEORG KHIM+, V3, P659

[2]

Cense J. -M., 1989, TETRAHEDRON COMPUTER, V2, P65, DOI 10.1016/0898-5529(89)90030-4

[3] CALCULATION OF ABSORPTION CORRECTIONS FOR CAMERA AND DIFFRACTOMETER DATA [J].

COPPENS, P ;

LEISEROWITZ, L ;

RABINOVICH, D .

ACTA CRYSTALLOGRAPHICA, 1965, 18 :1035-+

[4]

Cromer D., 1974, INT TABLES XRAY CRYS, P4

[5]

FRENZ BA, 1982, STRUCTURE DETERMINAT

[6]

GRIOT R, 1991, THESIS U MONTPELLIER

[7]

IMAMOV PM, 1971, SOV PHYS CRYSTALLOGR, V15, P845

[8]

LANGE PW, 1939, NATURWISSENSCHAFTEN, V0027

[9] CRYSTAL STRUCTURE OF BI2TE3-XSEX [J].

NAKAJIMA, S .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1963, 24 (03) :479-&

[10] AN EMPIRICAL-METHOD FOR CORRECTING DIFFRACTOMETER DATA FOR ABSORPTION EFFECTS [J].

WALKER, N ;

STUART, D .

ACTA CRYSTALLOGRAPHICA SECTION A, 1983, 39 (JAN) :158-166

← 1 2 →