Structural refinement and thermal expansion of hexaborides

被引：78

作者：

Chen, CH ^{[1
]}

Aizawa, T ^{[1
]}

Iyi, N ^{[1
]}

Sato, A ^{[1
]}

Otani, S ^{[1
]}

机构：

[1] NIMS, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 366卷 / 1-2期

关键词：

X-ray diffraction; thermal expansion; hexaborides;

D O I：

10.1016/S0925-8388(03)00735-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the boron-framework of hexaborides, CaB6, SrB6, BaB6, YB6 and LaB6, the boron position was found to be adjusted so as to compensate the interaction between the cations. It was estimated from the boron position that a boron-boron bond between the boron octahedra has a 1.5 times higher force constant than that in the octahedron, which is consistent with the results of the neutron and Raman scattering experiments. In addition, the adjustment of the boron position well corresponded with the thermal expansion. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：L6 / L8

页数：3

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