Magnetic susceptibility of Bi2Te3-Sb2Te3 alloys

被引：6

作者：

Stepanov, N. P. ^{[1
]}

Gil'fanov, A. K. ^{[1
]}

Ivanova, L. D. ^{[2
]}

Granatkina, Yu. V. ^{[2
]}

机构：

[1] Zabaikalsky State Pedagog Univ, Chita 672000, Russia

[2] Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119991, Russia

来源：

SEMICONDUCTORS | 2008年 / 42卷 / 04期

关键词：

71.28.+d; 75.20.Ck; 75.30.Gw;

D O I：

10.1134/S1063782608040064

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetic susceptibility of Czochralski-grown single crystals of Bi2Te3-Sb2Te3 alloys containing 0, 10, 25, 40, 50, 60, 65, 70, 80, 90, 99.5, or 100 mol % Sb2Te3 has been investigated. The magnetic susceptibility of these crystals was determined at the temperature T = 291 K and the magnetic field H oriented parallel (chi(parallel to)) and perpendicularly (chi(perpendicular to)) to the trigonal crystallographic axis C (3). A complicated concentration dependence of the anisotropy of magnetic susceptibility chi(parallel to)/chi(perpendicular to) has been revealed. The crystals with the free carrier concentration p approximate to 5 x 10(19) cm(-3) do not exhibit anisotropy of magnetic susceptibility. The transition to the isotropic magnetic state occurs for the compositions characterized by a significantly increased (from 200 to 300 meV) optical bandgap.

引用

页码：401 / 405

页数：5