首页> 外文期刊>Nanotechnology >Dominant dipolar interaction and glassy magnetic behaviour in polymer-coated magnetite nanoparticles
【24h】

Dominant dipolar interaction and glassy magnetic behaviour in polymer-coated magnetite nanoparticles

机译:聚合物包覆的磁铁矿纳米粒子中主要的偶极相互作用和玻璃态磁行为

获取原文
获取原文并翻译 | 示例
           

摘要

The static and dynamic properties of magnetization have been investigated for polymer-coated magnetite nanoparticles with sizes from 5 to 15 nm. The analysis of the temperature dependence of zero-field-cooled magnetization indicates that the effective anisotropy constant is found to increase with the decrease of particle size, which is ascribed to the increase of surface anisotropy. The relaxation of the remanent magnetization clearly shows the signature of dominant dipolar interparticle interaction. The dynamics of magnetization also indicates the signature of glassy magnetic behaviour. The memory effect in the temperature dependence of field-cooled magnetization is noticed, which is inconsistent with the glassy magnetic behaviour.
机译:对于尺寸为5至15 nm的聚合物涂层磁铁矿纳米粒子,已经研究了其磁化的静态和动态特性。零场冷磁化强度的温度依赖性分析表明,有效各向异性常数随粒径的减小而增加,这归因于表面各向异性的增加。剩余磁化强度的松弛清楚地表明了主要的偶极粒子间相互作用的特征。磁化的动力学也表明玻璃态磁行为的特征。注意到了场致冷磁化强度对温度的依赖性的记忆效应,这与玻璃态磁行为不一致。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号