Preparation and electrical properties of Ca5Si3 and Sr5Si3 powders

被引：13

作者：

Inaba, T.

Kato, A.

Miura, K.

Akasaka, M.

Lida, T.

Momose, Y.

Tatsuoka, H.

机构：

[1] Shizuoka Univ, Fac Engn, Hamamatsu, Shizuoka 4328561, Japan

[2] FDK Corp, Kosai 4310495, Japan

[3] Tokyo Univ Sci, Dept Mat Sci & Technol, Noda, Chiba 2788510, Japan

[4] Shizuoka Univ, Elect Res Inst, Hamamatsu, Shizuoka 4328011, Japan

来源：

THIN SOLID FILMS | 2007年 / 515卷 / 22期

关键词：

silicides; semiconductors; structural properties; electrical properties and measurements;

D O I：

10.1016/j.tsf.2007.02.048

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single phase Ca5Si3 and Sr5Si3 powders were prepared, and their electric and thermoelectric properties were investigated. The Ca5Si3 and Sr5Si3 powders are synthesized by exposure of the Si powders to Ca and Sr fluxes, respectively. It is found that both silicides show a p-type conduction and semiconductor-like behavior. The electronic band structures of the silicides are calculated using the first-principles total-energy calculation program in pseudopotential schemes with plane-wave basis functions. The calculated result predicts the possibility of a semiconductor-like property with a sharp pseudogap at the Fermi level for Ca5Si3, as experimentally obtained. The silicide would be expected to be a new semiconductor-like conducting material. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：8226 / 8229

页数：4

共 23 条

[1] The GW method [J].