| Crystal structure and thermal expansion of perovskites containing uranium（VI） and rare-earth elements |
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| 引用本文： | Aleksandr Knyazev,Anna Ershova,Nikolai Chemorukov. Crystal structure and thermal expansion of perovskites containing uranium（VI） and rare-earth elements[J]. 中国稀土学报(英文版), 2009, 27(1): 4-11. DOI: 10.1016/S1002-0721(08)60180-5 |
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| 作者姓名： | Aleksandr Knyazev Anna Ershova Nikolai Chemorukov |
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| 作者单位： | Nizhny Novgorod State University,Gagarin Prospekt 23/2,603950 Nizhny Novgorod,Russia |
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| 摘 要： |
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| 关 键 词： | 热膨胀系数 晶体结构 稀土元素 Rietveld方法 钙钛矿 高温X射线衍射 含铀 VI |
| 收稿时间： | 2008-04-17 |
Crystal structure and thermal expansion of perovskites containing uranium (VI) and rare-earth elements |
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| Aleksandr,Anna Ershova,Nikolai Chernorukov. Crystal structure and thermal expansion of perovskites containing uranium (VI) and rare-earth elements[J]. Journal of Rare Earths, 2009, 27(1): 4-11. DOI: 10.1016/S1002-0721(08)60180-5 |
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| Authors: | Aleksandr Anna Ershova Nikolai Chernorukov |
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| Affiliation: | Nizhny Novgorod State University, Gagarin Prospekt 23/2, 603950 Nizhny Novgorod, Russia |
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| Abstract: | By the method of high-temperature reactions in solid phase, compounds with the general formula MII(AIII2/3U1/3)O3 (MII=Sr, AIII=Sc, In; MII=Ba, AIII=Sc, In, Y, Nd-Lu) were synthesized. Their structures (space groups Fmm and Pnma) were refined by the Rietveld method and morphotropic transition in Ba(Ln2/3U1/3)O3 on the border of Gd-Tb was discovered. By means of high-temperature X-ray diffraction, phase transitions were studied and thermal expansion coefficients were determined. |
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| Keywords: | perovskite uranium X-ray diffraction Rietveld structure thermal expansion rare earths |
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