Crystal structure and negative thermal expansion of solid solution Yb2W3-xMoxO12
Peng J(彭杰); Peng, J; Liu, XZ; Guo, FL; Han, SB; Liu, YT; Chen, DF; Hu, Z
刊名MATERIALS AT HIGH TEMPERATURES
2010
卷号27期号:2页码:#REF!
关键词negative thermal expansion X-ray diffraction rare-earth molybdates rare-earth tungstates
学科分类Materials Science; Metallurgy & Metallurgical Engineering
DOI10.3184/096034010X12743509428372
通讯作者Peng, J (reprint author), CAS, Expt Phys Ctr, Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型Article
英文摘要A new series of solid solutions Yb2W3-xMoxO12 (0: 5 <= x <= 2: 5) were successfully synthesized by the high-temperature solid state method. Their crystal structure and negative thermal expansion properties were studied using high-temperature X-ray powder diffraction and the Rietveld method. All samples of rare earth tungstates and molybdates were found to 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 (TEC) of Yb2W3-xMoxO12 were determined as -18.3 x 10(-6) K-1 for x = 0.5 and -19.6 x 10(-6) K-1 for x = 2.5 comparing to -19.1 x 10(-6) K-1 and -18.3 x 10(-6) K-1 for unsubstituted Yb2W3O12 and Yb2Mo3O12 in the identical temperature range of 200-800 degrees C. High temperature X-ray diffraction data and bond length analysis suggest that the difference between W-O and Mo-O bond is responsible for the change of TECs after the element substitution in this series of solid solutions.
类目[WOS]Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别SCI
WOS记录号WOS:000279589100010
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被引频次:2[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/311005/226519
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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Peng J,Peng, J,Liu, XZ,et al. Crystal structure and negative thermal expansion of solid solution Yb2W3-xMoxO12[J]. MATERIALS AT HIGH TEMPERATURES,2010,27(2):#REF!.
APA 彭杰.,Peng, J.,Liu, XZ.,Guo, FL.,Han, SB.,...&Hu, Z.(2010).Crystal structure and negative thermal expansion of solid solution Yb2W3-xMoxO12.MATERIALS AT HIGH TEMPERATURES,27(2),#REF!.
MLA 彭杰,et al."Crystal structure and negative thermal expansion of solid solution Yb2W3-xMoxO12".MATERIALS AT HIGH TEMPERATURES 27.2(2010):#REF!.
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