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首页> 外文期刊>Applied Physics Letters >Unexpected magnetic behavior in amorphous Co_(90)Sc_(10) alloy
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Unexpected magnetic behavior in amorphous Co_(90)Sc_(10) alloy

机译：非晶Co_（90）Sc_（10）合金中的意外磁行为

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摘要

An amorphous alloy Co_(90)Sc_(10) has been prepared by rapid quenching from the melt. The results of magnetization measurements show that this alloy has the highest Curie temperature reported for any amorphous transition metal based alloys. Furthermore, for a Co based amorphous alloy, the magnetic moment is remarkably high. Moreover, the alloy exhibits soft magnetic properties. Based on the findings, amorphous Co_(90)Sc_(10) appears to be an attractive candidate for applications as a soft magnetic material. The temperature dependence of the reduced magnetization can be described by the Bloch power law. The results show that the B coefficient of the amorphous Co_(90)Sc_(10) alloy, which is a measure of the rigidity of spin waves, exhibits the lowest value observed until now for any amorphous alloy and is comparable to crystalline alloys. It is found that the Sc atoms in the Co_(90)Sc_(10) alloy lead to an increase of the itinerant spin moment of Co atoms, and, in contrast to this behaviour, to a decrease of the local 3d-electrons of Co.
机译：通过从熔体中快速淬火制备了非晶态合金Co_（90）Sc_（10）。磁化测量的结果表明，对于任何基于非晶态过渡金属的合金，该合金都具有最高的居里温度。此外，对于Co基非晶合金，磁矩非常高。而且，该合金表现出软磁性能。基于这些发现，非晶态Co_（90）Sc_（10）似乎是作为软磁材料应用的有吸引力的候选材料。降低的磁化强度的温度依赖性可以通过布洛赫幂定律来描述。结果表明，非晶Co_（90）Sc_（10）合金的B系数是自旋波刚度的量度，显示出迄今为止对任何非晶合金都观察到的最低值，与结晶合金相当。发现Co_（90）Sc_（10）合金中的Sc原子导致Co原子的流动自旋矩增加，并且与此行为相反，导致Co的局部3d电子减少。

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  • 来源
    《Applied Physics Letters》 |2015年第13期|132406.1-132406.4|共4页
  • 作者

    M. Ghafari; Y. Sakurai; G. Peng; Y. N. Fang; T. Feng; H. Hahn; H. Gleiter; M. Itou; S. Kamali;

  • 作者单位

    Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China,Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany;

    Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo, Sayo, Hyogo, Japan;

    Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China;

    Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China;

    Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China;

    Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China,Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany,KIT-TUD Joint Research Laboratory Nanomaterials, Institute of Materials Science, Technische Universitaet Darmstadt (TUD), Jovanka-Bontschits-Str. 2, 64287 Darmstadt, Germany;

    Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China,Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany;

    Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo, Sayo, Hyogo, Japan;

    Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee Space Institute, Tullahoma, Tennessee 37388, USA;

  • 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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  • 入库时间 2022-08-18 03:15:20

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