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2005 Volume 14 Issue 9
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Feng Jia-Feng, Zhao Kun, Huang Yan-Hong, Zhao Jian-Gao, Han Xiu-Feng, Zhan Wen-Shan, Wong Hong-Kuen. 2005: Magnetotransport properties of La0.67Ca0.33MnO3/La0.67Sr0.33MnO3 bilayers, Chinese Physics B, 14(9): 1879-1881.
Citation: Feng Jia-Feng, Zhao Kun, Huang Yan-Hong, Zhao Jian-Gao, Han Xiu-Feng, Zhan Wen-Shan, Wong Hong-Kuen. 2005: Magnetotransport properties of La0.67Ca0.33MnO3/La0.67Sr0.33MnO3 bilayers, Chinese Physics B, 14(9): 1879-1881.
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Magnetotransport properties of La0.67Ca0.33MnO3/La0.67Sr0.33MnO3 bilayers

  • Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

  • Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;Spintronics Laboratory, School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252059, China;

  • Department of Physics, The Chinese University of Hong Kong, Hong Kong

  • Available Online: 30/09/2005
  • Fund Project: the National Natural Science Foundation of China(Grant 50371102 and 10334070)%Hi-Tech Research and Development Program of China(Grant 2004AA32G090)%the Research Foundation of Shandong Provincial Education Department of Chin
  • The perovskite bilayers La0.67Ca0.33MnO3 (LCMO) (100 nm) / La0.67Sr0.33MnO3(LSMO) (100 nm) and LSMO (100 nm) / LCMO (100 nm) are fabricated by a facing-target sputtering technique. Their transport and magnetic properties axe investigated. It is found that the transport properties between them are different obviously due to distinguishable structures, and the different lattice strains in both films result in the difference of metal-to-insulator transition. Only single-step magnetization loop appears in our bilayers from 5K to 320K, and the coercive force of LSMO/LCMO varies irregularly with a minimum ～ 2387A/m which is lower than that of LCMO and LSMO single layer films. The behaviour is explained by some magnetic coupling.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Magnetotransport properties of La0.67Ca0.33MnO3/La0.67Sr0.33MnO3 bilayers

  • Available Online: 30/09/2005

Abstract: The perovskite bilayers La0.67Ca0.33MnO3 (LCMO) (100 nm) / La0.67Sr0.33MnO3(LSMO) (100 nm) and LSMO (100 nm) / LCMO (100 nm) are fabricated by a facing-target sputtering technique. Their transport and magnetic properties axe investigated. It is found that the transport properties between them are different obviously due to distinguishable structures, and the different lattice strains in both films result in the difference of metal-to-insulator transition. Only single-step magnetization loop appears in our bilayers from 5K to 320K, and the coercive force of LSMO/LCMO varies irregularly with a minimum ～ 2387A/m which is lower than that of LCMO and LSMO single layer films. The behaviour is explained by some magnetic coupling.

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