La空位和Sr离子掺杂对La-Ca-MnO材料磁性能的影响

李爱君, 王莲芬, 孙红辉

李爱君, 王莲芬, 孙红辉. La空位和Sr离子掺杂对La-Ca-MnO材料磁性能的影响[J]. 材料开发与应用, 2018, 33(4): 105-108. DOI: 10.19515/j.cnki.1003-1545.2018.04.019
引用本文: 李爱君, 王莲芬, 孙红辉. La空位和Sr离子掺杂对La-Ca-MnO材料磁性能的影响[J]. 材料开发与应用, 2018, 33(4): 105-108. DOI: 10.19515/j.cnki.1003-1545.2018.04.019
LI Aijun, WANG Lianfen, SUN Honghui. Effects of La Vacancy and Sr Doping on the Magnetic Property of La-Ca-MnO Material[J]. Development and Application of Materials, 2018, 33(4): 105-108. DOI: 10.19515/j.cnki.1003-1545.2018.04.019
Citation: LI Aijun, WANG Lianfen, SUN Honghui. Effects of La Vacancy and Sr Doping on the Magnetic Property of La-Ca-MnO Material[J]. Development and Application of Materials, 2018, 33(4): 105-108. DOI: 10.19515/j.cnki.1003-1545.2018.04.019

La空位和Sr离子掺杂对La-Ca-MnO材料磁性能的影响

基金项目: 

火箭军工程大学青年基金资助项目(QN20160019)

详细信息
    作者简介:

    李爱君,女,1979年生,副教授,主要从事凝聚态物理教学和研究工作;E-mail:Liaijun1979@163.com。

  • 中图分类号: TB64

Effects of La Vacancy and Sr Doping on the Magnetic Property of La-Ca-MnO Material

  • 摘要: 用溶胶-凝胶法制备了La位空位掺杂La0.7-xCa0.28Sr0.02MnO3(x=0.00~0.10)系列样品和Sr离子掺杂La0.77-xCa0.2SrxMnO3(x=0.00~0.10)系列样品,研究了La位空位掺杂和Sr离子掺杂对样品相结构、居里温度和磁熵变的影响。结果表明,两个系列样品都在近室温有较大磁熵变,对于钙钛矿La-Ca-MnO3型材料,在La位含少量空位的基础上进行Sr离子掺杂,对居里温度和磁熵都有较积极的调节作用。
    Abstract: La vacancy doping La0.7-xCa0.28Sr0.02MnO3 (x=0.00~0.10) samples and Sr ion doping La0.77-xCa0.2SrxMnO3 (x=0.00~0.10) samples were prepared by sol-gel method, and the influence of La space vacancy doping and Sr ion doping on the phase structure, Curie temperature and magnetic entropy change were investigated.Results showed that both series of samples have large magnetic entropy changes at near room temperature; that for the perovskite La-Ca-MnO3 material, doping Sr ion with a small vacancy in the La position has a positive regulating effect on the Curie temperature and magnetic entropy.
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出版历程
  • 收稿日期:  2018-02-24
  • 网络出版日期:  2024-03-17

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