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首页> 外文期刊>Journal of Materials Research >Enhanced magnetoresistance of La_(2/3)Ca_(1/3)MnO_3/Sr_2FeMoO_6 core/cell nanocrystalline composites synthesized by polymer-network sol-gel method
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Enhanced magnetoresistance of La_(2/3)Ca_(1/3)MnO_3/Sr_2FeMoO_6 core/cell nanocrystalline composites synthesized by polymer-network sol-gel method

机译：聚合物网络溶胶-凝胶法合成La_（2/3）Ca_（1/3）MnO_3 / Sr_2FeMoO_6核/细胞纳米晶复合材料的增强磁阻

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摘要

This paper reports that the homogeneous nanocrystalline LCMO(core)/SFMO(shell) and SFMO(core)/LCMO(shell) series composites are successively synthesized using polymer-network sol-gel method. With the increase of SFMO content in the composites, the remanence magnetization M_r increases while the coercivity H_c decreases. This fact indicates that the ferromagnetic phase boosts up. Moreover, the LFMR (1 T) of the composites succeeds the preponderances of both SFMO and LCMO; i.e., the magnetoresistance (MR) value increases from 300 to 5 K and keeps a high level. In particular, the MR value of the LS-8 composite reaches 55% at 5 K and 7 T.
机译：本文报道采用聚合物网络溶胶-凝胶法相继合成了均相纳米晶LCMO（核）/ SFMO（壳）和SFMO（核）/ LCMO（壳）系列复合材料。随着复合物中SFMO含量的增加，剩磁M_r增加，而矫顽力H_c降低。这一事实表明铁磁相增强了。此外，复合材料的LFMR（1 T）取代了SFMO和LCMO的优势。即，磁阻（MR）值从300 K增加到5 K，并保持较高的水平。尤其是，LS-8复合材料在5 K和7 T下的MR值达到55％。

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  • 来源
    《Journal of Materials Research》 |2010年第2期|255-259|共5页
  • 作者

    Xi Shen; Lide Yao; Hua Yang; Qing Zhao; Changqing Jin; Richeng Yu;

  • 作者单位

    Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China;

    Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, People's Republic of China;

    Department of Physics, School of Science, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

    Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China;

    Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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