Magnetic properties of sputtered anisotropic Pr–Fe–B thin films with different structures and antiferromagnetic materials
来源期刊：Rare Metals2016年第12期
论文作者：Fang Yang Wei Liu Zhi-Dong Zhang
文章页码：926 - 929
摘 要：Anisotropic Pr–Fe–B films with soft-magnetic layer（Fe） and/or antiferromagnetic layer（Mn, Fe Mn or Mn O） were prepared by direct-current（DC） magnetron sputtering on Si（100） substrates heated at 650 °C. The influence of four types’ different structures on the magnetic properties of Pr–Fe–B films was investigated.The phase and magnetic properties were characterized by means of X-ray diffraction（XRD） and superconducting quantum interference device（SQUID）. Addition of antiferromagnetic layer enhances both the coercivity and the remanence ratios of Pr–Fe–B films with suitable structures. The interface number increases and the antiferromagnetic–ferromagnetic exchange interaction is likely to become stronger, which affect the improvement of magnetic properties. To further understand the influence of structures with soft-magnetic Fe layer and/or antiferromagnetic Fe Mn layer on the magnetic properties of Pr–Fe–B hard-magnetic films, the thickness of Pr–Fe–B layer was designed to decrease from 600 to 50 nm. The improvement of magnetic properties becomes obvious in Mo（50 nm）/Pr–Fe–B（25 nm）Mo（2 nm）Fe Mn（20 nm）Mo（2 nm）Pr–Fe–B（25 nm）/Mo（50 nm） film.
Fang Yang1,2，Wei Liu1，Zhi-Dong Zhang1
1. Shenyang National Laboratory for Materials Science,Institute of Metal Research and International Centre for Materials Physics,Chinese Academy of Sciences2. Superconducting Materials Research Center,Northwest Institute for Nonferrous Metal Research
摘 要：Anisotropic Pr–Fe–B films with soft-magnetic layer（Fe） and/or antiferromagnetic layer（Mn, Fe Mn or Mn O） were prepared by direct-current（DC） magnetron sputtering on Si（100） substrates heated at 650 °C. The influence of four types’ different structures on the magnetic properties of Pr–Fe–B films was investigated.The phase and magnetic properties were characterized by means of X-ray diffraction（XRD） and superconducting quantum interference device（SQUID）. Addition of antiferromagnetic layer enhances both the coercivity and the remanence ratios of Pr–Fe–B films with suitable structures. The interface number increases and the antiferromagnetic–ferromagnetic exchange interaction is likely to become stronger, which affect the improvement of magnetic properties. To further understand the influence of structures with soft-magnetic Fe layer and/or antiferromagnetic Fe Mn layer on the magnetic properties of Pr–Fe–B hard-magnetic films, the thickness of Pr–Fe–B layer was designed to decrease from 600 to 50 nm. The improvement of magnetic properties becomes obvious in Mo（50 nm）/Pr–Fe–B（25 nm）Mo（2 nm）Fe Mn（20 nm）Mo（2 nm）Pr–Fe–B（25 nm）/Mo（50 nm） film.
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