| Zr1-xMxWMoO8-x/2和Zr1-xMxW2O8-x/2固溶体的晶胞参数与晶格畸变的关系 |
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| 引用本文： | 郭富丽,马 辉,杨晓晶,邓学彬,赵新华. Zr1-xMxWMoO8-x/2和Zr1-xMxW2O8-x/2固溶体的晶胞参数与晶格畸变的关系[J]. 无机化学学报, 2011, 27(10): 2061-2065 |
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| 作者姓名： | 郭富丽 马 辉 杨晓晶 邓学彬 赵新华 |
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| 作者单位： | 北京师范大学化学学院和分析测试中心，北京 100875,北京师范大学化学学院和分析测试中心，北京 100875,北京师范大学化学学院和分析测试中心，北京 100875,北京师范大学化学学院和分析测试中心，北京 100875,北京师范大学化学学院和分析测试中心，北京 100875 |
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| 基金项目： | 国家自然科学基金(NSFC20471010和50872012); 北京市无机化学重点学科基金资助项目 |
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| 摘 要： | 合成了Zr1-xMxWMoO8-x/2(M=Er,Tm,Yb,Sc,In,Ga,Al)和Zr1-xMxW2O8-x/2(M=Eu,Er,Yb,Sc,In,Ga,Al)2个系列的固溶体,前者具有β-ZrW2O8结构类型(简称β相);后者具有α-ZrW2O8结构类型(简称α相)。建立了相和相的晶胞参数与M3+离子浓度的Vegard方程,测定了上述固溶体的固溶度。讨论了M3+离子的化学性质与Vegard斜率SV的关系。分析了α相的SαA与β相的SβA的关系;揭示了α-Zr1-xMxW2O8-x/2晶格中2[WO4]四面体对的取向有序程度对晶格畸变的贡献。提出上述固溶体的晶胞参数随溶质浓度增加而减小,主要是由于氧空位缺陷相互作用的结果。
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| 关 键 词： | 固溶体 固溶度 负热膨胀性质 Vegard斜率 |
Effect of Lattice Parameters of Zr1-xMxWMoO8-x/2 and Zr1-xMxW2O8-x/2 Solid Solutions on Lattice Distortion |
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| GUO Fu-Li,MA Hui,YANG Xiao-Jing,DENG Xue-Bin and ZHAO Xin-Hua. Effect of Lattice Parameters of Zr1-xMxWMoO8-x/2 and Zr1-xMxW2O8-x/2 Solid Solutions on Lattice Distortion[J]. Chinese Journal of Inorganic Chemistry, 2011, 27(10): 2061-2065 |
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| Authors: | GUO Fu-Li MA Hui YANG Xiao-Jing DENG Xue-Bin ZHAO Xin-Hua |
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| Affiliation: | College of Chemistry, Analysis and Test Center, Beijing Normal University, Beijing 100875, China,College of Chemistry, Analysis and Test Center, Beijing Normal University, Beijing 100875, China,College of Chemistry, Analysis and Test Center, Beijing Normal University, Beijing 100875, China,College of Chemistry, Analysis and Test Center, Beijing Normal University, Beijing 100875, China and College of Chemistry, Analysis and Test Center, Beijing Normal University, Beijing 100875, China |
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| Abstract: | The Zr1-xMxWMoO8-x/2(M=Er,Tm,Yb,Sc,In,Ga,Al) and Zr1-xMxW2O8-x/2(M=Sc,In,Ga,Al) solid solutions were synthesized.Their XRD patterns show typical structure of β-and α-ZrW2O8,respectively.The lattice parameters α′s for both series of solid solutions are linear functions of the M3+ concentrationM within the limited solubility,and could be described by Vegard equations with the slope of SαM or SβM dependent of the difference in ionic radius and the electro-negativity of the M3+ ion.However,SαM of α-Zr1-xMxW2O8-x/2 appears to be also associated with the partial orientation of 2 pair.In addition,the contraction of the lattice parameters observed for both series of the solid solutions are possibly caused primarily by the oxygen vacancy defect. |
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| Keywords: | solid solution solid solubility negative thermal expansion vegard slope |
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