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Crystal structure and negative thermal expansion properties of solid solution Er2W3-xMoxO12
Peng J(彭杰); Peng, J; Liu, XZ; Guo, FL; Han, SB; Liu, YT; Chen, DF; Zhao, XH; Hu, ZB
2009
发表期刊TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷号19期号:6页码:1623-1627
通讯作者[Peng Jie] Chinese Acad Sci, Inst High Energy Phys, Expt Phys Ctr, Beijing 100049, Peoples R China ; [Peng Jie ; Hu Zhong-bo] Chinese Acad Sci, Grad Univ, Coll Chem & Chem Engn, Beijing 100049, Peoples R China ; [Liu Xin-zhi ; Han Song-bai ; Liu Yun-tao ; Chen Dong-feng] China Inst Atom Energy, Beijing 102413, Peoples R China ; [Guo Fu-li ; Zhao Xin-hua] Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China
摘要A series of solid solutions Er2W3-xMoxO12 (0.5 <= x <= 2.5) were successfully synthesized by the solid state method. Their crystal structures and negative thermal expansion properties were studied by high temperature X-ray powder diffraction and the Rietveld method. All samples with rare earth tungstates and molybdates crystallize in the same orthorhombic structure with space group Pnca, and show the negative thermal expansion phenomena related to transverse vibration of bridging oxygen atoms in the structure. Thermal expansion coefficients (TECs) of Er2W3-xMoxO12 were determined as -16.2 x 10(-6) K-1 for x=0.5 and - 16.5 x 10(-6) K-1 for x=2.5 while -20.2 x 10(-6) K-1 and -18.4 x 10(-6) K-1 for unsubstituted Er2W3O12 and Er2Mo3O12 in the identical temperature range of 200-800 degrees C. High temperature XRD data and bond length analysis suggest that the difference between W-O and Mo-O is responsible for the change of TECs after the element substitution in the series of solid solutions.
文章类型Article; Proceedings Paper
关键词negative thermal expansion X-ray diffraction rare earth molybdate tungstate
学科领域Metallurgy & Metallurgical Engineering
研究领域[WOS]Metallurgy & Metallurgical Engineering
DOI10.1016/S1003-6326(09)60079-0
URL查看原文
语种英语
WOS类目Metallurgy & Metallurgical Engineering
WOS记录号WOS:000272501000043
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239440
专题实验物理中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Peng J,Peng, J,Liu, XZ,et al. Crystal structure and negative thermal expansion properties of solid solution Er2W3-xMoxO12[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2009,19(6):1623-1627.
APA 彭杰.,Peng, J.,Liu, XZ.,Guo, FL.,Han, SB.,...&Hu, ZB.(2009).Crystal structure and negative thermal expansion properties of solid solution Er2W3-xMoxO12.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,19(6),1623-1627.
MLA 彭杰,et al."Crystal structure and negative thermal expansion properties of solid solution Er2W3-xMoxO12".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 19.6(2009):1623-1627.
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