中国物理B ›› 2022, Vol. 31 ›› Issue (8): 87501-087501.doi: 10.1088/1674-1056/ac70c2

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Magnetic properties of oxides and silicon single crystals

Zhong-Xue Huang(黄忠学)1,2, Rui Wang(王瑞)1,2, Xin Yang(杨鑫)1,2, Hao-Feng Chen(陈浩锋)1,2, and Li-Xin Cao(曹立新)1,2,†   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2022-04-14 修回日期:2022-05-10 接受日期:2022-05-18 出版日期:2022-07-18 发布日期:2022-07-18
  • 通讯作者: Li-Xin Cao E-mail:lxcao@iphy.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61974161 and 11474324).

Magnetic properties of oxides and silicon single crystals

Zhong-Xue Huang(黄忠学)1,2, Rui Wang(王瑞)1,2, Xin Yang(杨鑫)1,2, Hao-Feng Chen(陈浩锋)1,2, and Li-Xin Cao(曹立新)1,2,†   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2022-04-14 Revised:2022-05-10 Accepted:2022-05-18 Online:2022-07-18 Published:2022-07-18
  • Contact: Li-Xin Cao E-mail:lxcao@iphy.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61974161 and 11474324).

摘要: The magnetic properties of single crystals Si, SrTiO3, LaAlO3, MgO, and (La,Sr)(Al,Ta)O3 were investigated systematically. Three origins of the magnetizations of these crystals, namely, an intrinsic diamagnetic, a paramagnetic, and a ferromagnetic contribution, have been found to influence the magnetic signals measured on the crystals, in some important application scenarios such crystals being served as substrates with the magnetic thin film epitaxially grown on. Quantitative analyses methodologies were developed and thorough investigations were performed on the crystals with the intrinsic materials parameters thus revealed, especially that the intrinsic diamagnetic susceptibility differential dχdia/dT were identified quantitatively for the first time in SrTiO3, LaAlO3, MgO, and (La,Sr)(Al,Ta)O3. The paramagnetic contribution is found to be the key in terms of the magnetic properties of the crystals, which in turn is in fact a consequence of the 3d impurities doping inside the crystal. All the intrinsic materials parameters are given in this paper as datasets, the datasets are openly available at https://www.doi.org/10.57760/sciencedb.j00113.00028.

关键词: magnetism, single crystals, oxides, silicon

Abstract: The magnetic properties of single crystals Si, SrTiO3, LaAlO3, MgO, and (La,Sr)(Al,Ta)O3 were investigated systematically. Three origins of the magnetizations of these crystals, namely, an intrinsic diamagnetic, a paramagnetic, and a ferromagnetic contribution, have been found to influence the magnetic signals measured on the crystals, in some important application scenarios such crystals being served as substrates with the magnetic thin film epitaxially grown on. Quantitative analyses methodologies were developed and thorough investigations were performed on the crystals with the intrinsic materials parameters thus revealed, especially that the intrinsic diamagnetic susceptibility differential dχdia/dT were identified quantitatively for the first time in SrTiO3, LaAlO3, MgO, and (La,Sr)(Al,Ta)O3. The paramagnetic contribution is found to be the key in terms of the magnetic properties of the crystals, which in turn is in fact a consequence of the 3d impurities doping inside the crystal. All the intrinsic materials parameters are given in this paper as datasets, the datasets are openly available at https://www.doi.org/10.57760/sciencedb.j00113.00028.

Key words: magnetism, single crystals, oxides, silicon

中图分类号:  (Diamagnetism, paramagnetism, and superparamagnetism)

  • 75.20.-g
75.30.Cr (Saturation moments and magnetic susceptibilities) 75.30.Hx (Magnetic impurity interactions)