Structural and controllable thermal expansion properties of Sc2-xAlxMo3O12

被引：11
|
作者：
Wu, Meimei [1 ]
Peng, Jie [2 ]
Cheng, Yingzhi [3 ]
Xiao, Xiaoling [4 ]
Chen, Dongfeng [1 ]
Hu, Zhongbo [4 ]
机构：
[1] China Inst Atom Energy, Beijing 102413, Peoples R China
[2] Chinese Acad Sci, Expt Phys Ctr, Inst High Energy Phys, Beijing 100049, Peoples R China
[3] Shandong Univ Technol, Coll Chem Engn, Zibo 255049, Peoples R China
[4] Chinese Acad Sci, Grad Univ, Coll Mat & Photoelect Technol, Beijing 100049, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 577卷
基金：
中国国家自然科学基金;
关键词：
Crystal structure; Thermal expansion; X-ray diffraction; PHASE-TRANSITIONS;
D O I：
10.1016/j.jallcom.2013.06.019
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：
The crystal structure and thermal expansion properties of solid solutions Sc2-xAlxMo3O12(x = 0.0-2.0) are systematically investigated by X-ray diffraction. Rietveld refinement results indicate that samples with x <= 1.3 crystallize in a sc(2)Mo(3)O(12)-type orthorhombic (Pnca) structure, whereas others have an Al2Mo3O12-type monoclinic (P2(1)/a) structure. Substitution of 15% Al3+ for Sc3+ leads to a rapid change in linear thermal expansion coefficient from -2.334 x 10(-6) degrees C-1 to 0.732 x 10(-6) degrees C-1. The thermal expansion coefficients of Sc2-xAlxMo3O12 monotonously increase with increased Al3+ content. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：295 / 298
页数：4
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