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Amorphous and nanocrystalline ZrO2 center dot Y2O3 (15%) studied by extended X-ray absorption fine structure
Qi, ZM; Shi, CS; Wang, Z; Wei, YG; Xie, YN; Hu, TD; Li, FL; 谢亚宁,胡天斗
2001
发表期刊ACTA PHYSICA SINICA
卷号50期号:7页码:1318-1323
通讯作者Univ Sci & Technol China, Natl Lab Synchrotron Radiat, Hefei 230029, Peoples R China ; Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China ; Capital Normal Univ, Dept Phys, Beijing 100037, Peoples R China
文章类型Article
摘要Chemical coprecipitated amorphous and nanocrystalline ZrO2.Y2O3 (15%) was Studied by Powder X-ray diffraction(XRD) and extended X-ray absorption fine structure(EXAFS). XRD result shows that the sample is an amorphous phase annealed below 300 degreesC; and it crystallizes into cubic nanocrystalline zirconia at 500 degreesC. EXAFS analysis indicates that the coordination number and bond length of Zr-O shell has not changed when transforming from amorphous into nanocrystalline. This suggests that at 300 degreesC,it has formed the same nearest-neighbor local structure as at 900 degreesC. For Zr-Zr(Y) shell, with the reducing of grain size, the coordination number decreases obviously: the bond length is shorter and the disorder becomes larger. This result suggests that the grain size effect is much stronger for more distant coordination shell (Zr-Zr) than for the first nearest-neighbor shell(Zr-O).
关键词EXAFS crystallize coordination number bond length
学科领域Physics
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语种英语
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000169720600024
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239275
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Qi, ZM,Shi, CS,Wang, Z,et al. Amorphous and nanocrystalline ZrO2 center dot Y2O3 (15%) studied by extended X-ray absorption fine structure[J]. ACTA PHYSICA SINICA,2001,50(7):1318-1323.
APA Qi, ZM.,Shi, CS.,Wang, Z.,Wei, YG.,Xie, YN.,...&谢亚宁,胡天斗.(2001).Amorphous and nanocrystalline ZrO2 center dot Y2O3 (15%) studied by extended X-ray absorption fine structure.ACTA PHYSICA SINICA,50(7),1318-1323.
MLA Qi, ZM,et al."Amorphous and nanocrystalline ZrO2 center dot Y2O3 (15%) studied by extended X-ray absorption fine structure".ACTA PHYSICA SINICA 50.7(2001):1318-1323.
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