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尺寸对椭圆钴纳米环磁特性的影响
  • 摘要

    利用Monte-Carlo方法模拟了不同长、短轴以及不同内径的椭圆钻纳米环的磁特性.模拟结果表明:对于偏心率较小的椭圆钻纳米环,当内径不大时,系统的磁滞回线与圆形钻纳米环的磁滞回线相当类似;当内径较大时,系统的磁滞回线与圆形钻纳米环的结果有很大的不同.当椭圆的偏心率增大时,由于存在较多的过渡状态,系统磁滞回线的台阶变得更为平滑,这可以通过系统的磁化过程进行解释.当椭圆的偏心率较大时,由于出现了大量的过渡状态,系统的磁滞回线呈现的台阶变得更加平滑.

  • 作者

    叶晴莹  陈水源  李铭领  吴洋洋  黄志高  YE Qing-ying  CHEN Shui-yuan  LI Ming-ling  WU Yang-yang  HUANG Zhi-gao 

  • 作者单位

    福建师范大学物理与能源学院,福建福州,350108

  • 刊期

    2012年6期 ISTIC PKU

  • 关键词

    椭圆钴纳米环  Monte-Carlo方法  偏心率  内径  磁特性 

参考文献
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