Neutron and electron diffraction studies of ZnGa2Se4

被引：23

作者：

Hanada, T ^{[1
]}

Izumi, F

Nakamura, Y

Nittono, O

Huang, Q

Santoro, A

机构：

[1] Tokyo Inst Technol, Dept Met Engn, Tokyo 152, Japan

[2] Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 305, Japan

[3] NIST, Gaithersburg, MD 20899 USA

来源：

PHYSICA B | 1997年 / 241卷

关键词：

convergent-beam electron diffraction; neutron diffraction; Rietveld analysis;

D O I：

10.1016/S0921-4526(97)00592-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

ZnCa2Se4 is a II-III-VI compound semiconductor with a zincblende structure basically. Convergent-beam electron diffraction (CBED and neutron diffraction were applied to determine its crystal structure unambiguously. A CBED pattern clearly exhibits 4(R)mm(R) symmetry, which suggests that ZnGa2Se4 belongs to space group I(4) over bar2$ m. Rietveld analysis of neutron powder diffraction data on the basis of this space group shows that the 2a site is fully occupied by Ga and that the 2b site is completely vacant. On the other hand, the 4d site is statistically occupied by Zn and Ga atoms. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：373 / 375

页数：3

共 3 条

[1] GA-SE BOND LENGTHS AND EXAFS PHASE-SHIFTS IN TETRAHEDRALLY COORDINATED COMPOUNDS [J].