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Magnetic and transport properties of Dy substituted layered perovskite La1.3Sr1.7Mn2O7 |
Zheng Lin(郑琳)a)†, Lu Yi(鲁毅)a), Zhao Jian-Jun(赵建军)a), Zhang Xiang-Qun(张向群)b), Xing Ru(邢茹) a), and Wu Hong-Ye(吴鸿业)a), Jin Xiang(金香)a), Zhou Min(周敏)a), and Cheng Zhao-Hua(成昭华)b) |
a Department of Physics, Baotou Normal University, Baotou 014030, China; b State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract The effect of Dy substitution for La site in layered manganese oxides La1.3-xDyxSr1.7Mn2O7 on the magnetic and electrical properties has been investigated. With the La3+ substituting by Dy3+, the long range three-dimensional ferromagnetism transition and the insulator–metal transition disappear. These effects are attributed to the lattice distortion due to the substitution of the smaller Dy3+. Addtionally, the small Dy3+ is inclined to occupy the R site which is in the rock-salt layer, then the distribution of La, Sr, Dy ions in Dy-doped sample should be more orderly than that in La1.3Sr1.7Mn2O7, so there is only one insulator–metal transition in the $\rho$–T curve of the sample with x=0.05 and x=0.1.
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Received: 02 July 2010
Revised: 16 September 2010
Accepted manuscript online:
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PACS:
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61.72.S-
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(Impurities in crystals)
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72.80.Sk
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(Insulators)
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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75.60.Ej
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(Magnetization curves, hysteresis, Barkhausen and related effects)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 50862007) and the Inner Mongolia Natural Science Foundation of China (Grant No. 2009MS0101). |
Cite this article:
Zheng Lin(郑琳), Lu Yi(鲁毅), Zhao Jian-Jun(赵建军), Zhang Xiang-Qun(张向群), Xing Ru(邢茹), and Wu Hong-Ye(吴鸿业), Jin Xiang(金香), Zhou Min(周敏), and Cheng Zhao-Hua(成昭华) Magnetic and transport properties of Dy substituted layered perovskite La1.3Sr1.7Mn2O7 2010 Chin. Phys. B 19 127501
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