| La0.4Ca0.6MnO3系统中Mn位Fe和Cr掺杂效应的比较性研究 |
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| 引用本文： | 胡妮,刘雍,程莉,石兢,熊锐.La0.4Ca0.6MnO3系统中Mn位Fe和Cr掺杂效应的比较性研究[J].物理学报,2011,60(1):17503-017503. |
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| 作者姓名： | 胡妮 刘雍 程莉 石兢 熊锐 |
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| 作者单位： | (1)武汉大学物理科学与技术学院教育部声光材料与器件重点实验室,武汉 430072; (2)武汉大学物理科学与技术学院教育部声光材料与器件重点实验室,武汉 430072;湖北工业大学理学院,武汉 430068 |
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| 基金项目： | 国家自然科学基金 (批证号: 10974148 和10534030) 资助的课题. |
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| 摘 要： | 利用固相反应法制备了Mn位Fe3+和Cr3+掺杂的系列锰氧化物La0.4Ca0.6(Mn1-x(y)Bx(y))O3 (B=Fe3+ (0≤x≤0.1); Cr3+ (0≤y≤0.1)) 多晶样品,研究了掺杂对样品输运性质的影响.实验结果表明两种离子具有截
关键词：
锰氧化物
反铁磁
磁电阻效应
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| 关 键 词： | 锰氧化物 反铁磁 磁电阻效应 |
| 收稿时间： | 2010-03-30 |
Mn-site Fe/Cr doping effects in charge-ordered antiferromagnetic manganite La0.4 Ca0.6 MnO3 |
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| Hu Ni,Liu Yong,Cheng Li,Shi Jing,Xiong Rui.Mn-site Fe/Cr doping effects in charge-ordered antiferromagnetic manganite La0.4 Ca0.6 MnO3[J].Acta Physica Sinica,2011,60(1):17503-017503. |
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| Authors: | Hu Ni Liu Yong Cheng Li Shi Jing Xiong Rui |
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| Institution: | Key Laboratory of Acoustic &Photonic Material and Device, Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China;School of Science, Hubei University of Technology, Wuhan 430068, China;Key Laboratory of Acoustic &Photonic Material and Device, Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China;Key Laboratory of Acoustic &Photonic Material and Device, Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China;Key Laboratory of Acoustic &Photonic Material and Device, Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China;Key Laboratory of Acoustic &Photonic Material and Device, Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China |
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| Abstract: | Impurity effects on the stability of a charge-ordered antiferromagnetic state in La0.4Ca0.6MnO3 are investigated by Fe3+/Cr3+ doping on Mn-site. All the samples with different doping concentrations possess the same orthorhombic crystalline structure,and no evident variation in the structure can be seen. Our results reveal that the Fe3+/Cr3+ doping effects on the transport behavior are rather different, although both impurities have the same valance and are commonly antiferromagnetically coupled with other transition metal ions. We assign this remarkable different doping effects to the different electronic structure of the doping cations. |
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| Keywords: | manganites antiferromagnetic magnetoresistance effect |
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