| Different effects of Ce-doping on orbital and spin ordering in perovskite vanadate Sm_(1-χ)Ce_χ VO_3 |
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| 引用本文： | 胡新波,胡令,罗轩,赵邦传,孙玉平.Different effects of Ce-doping on orbital and spin ordering in perovskite vanadate Sm_(1-χ)Ce_χ VO_3[J].中国物理 B,2013(4):443-446. |
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| 作者姓名： | 胡新波 胡令 罗轩 赵邦传 孙玉平 |
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| 作者单位： | Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences;High Magnetic Field Laboratory, Chinese Academy of Sciences |
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| 基金项目： | Project supported by the National Key Basic Research Program of China (Grant No. 2011CBA00111);the National Natural Science Foundation of China(Grant Nos. 10974205, 11104273, and 11004193) |
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| 摘 要： | The effects of Ce-doping on the phase transition of the orbital/spin ordering (OO/SO) are studied through the structural, magnetic, and electrical transport measurements of perovskite vanadate Sm1 x Ce x VO 3 . The measurements of structure show that the cell volume decreases as x≤ 0.05, and then increases as Ce-doping level increases further. The OO state exists but is suppressed progressively in the sample with x≤0.2 and disappears as x0.2. The temperature at which the C-type SO transition is present increases monotonically with Ce-doping level increasing. The temperature dependence of resistivity for each of the samples shows a semiconducting transport behavior and the transport can be well described by the thermal activation model. The activation energy first decreases as x ≤0.2, and then increases for further doping. The obtained results are discussed in terms of the mixed-valent state of the doped-Ce ions.
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| 关 键 词： | perovskite vanadate orbital/spin ordering electrical properties |
Different effects of Ce-doping on orbital and spin ordering in perovskite vanadate Sm1-χCeχ VO3 |
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| Hu Xin-Bo a , Hu Ling a , Luo Xuan a , Zhao Bang-Chuan a , and Sun Yu-Ping.Different effects of Ce-doping on orbital and spin ordering in perovskite vanadate Sm1-χCeχ VO3[J].Chinese Physics B,2013(4):443-446. |
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| Authors: | Hu Xin-Bo a Hu Ling a Luo Xuan a Zhao Bang-Chuan a and Sun Yu-Ping |
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| Affiliation: | a) b) a) Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China b) High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China |
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| Abstract: | |
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| Keywords: | perovskite vanadate orbital/spin ordering electrical properties |
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