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

页码：295 / 298

页数：4

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