Phase transition in β-rhombohedral boron near 550 K

被引：10
|
作者：
Hoffmann, S. [1 ]
Werheit, H. [2 ]
机构：
[1] Max Plank Inst Chem Phys Solids, D-01187 Dresden, Germany
[2] Univ Duisburg Essen, Inst Phys, D-47048 Duisburg, Germany
来源：
SOLID STATE SCIENCES | 2012年 / 14卷 / 11-12期
关键词：
beta-rhombohedral boron; DSC; Phase transition; ELECTRONIC-PROPERTIES; CRYSTAL;
D O I：
10.1016/j.solidstatesciences.2012.01.025
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Differential scanning calorimetry (DSC) of high-purity, single crystal beta-rhombohedral boron (melting point 2365 K) evidences a structural phase transition close to 550 K, which is obviously responsible for discontinuities of numerous physical properties in this temperature region. These can be consistently interpreted assuming site hopping of boron atoms between regular, partially occupied crystallographic sites in the crystal structure. This site hopping is influenced by optical excitation. (c) 2012 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：1572 / 1577
页数：6
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