首页> 外文期刊>Nanotechnology >Thermal stabilization of magnetic nanoparticles embedded in a ferromagnetic matrix - art. no. 115714
【24h】

Thermal stabilization of magnetic nanoparticles embedded in a ferromagnetic matrix - art. no. 115714

机译:嵌入铁磁基质中的磁性纳米颗粒的热稳定性-艺术。没有。 115714

获取原文
获取原文并翻译 | 示例
           

摘要

We have developed an alternative method for building up a nanogranular system and have analysed its magnetic properties. Using a chemical route we have obtained magnetite nanoparticles with an average diameter of 4.5 nm and with a very narrow size distribution (sigma <= 20%). These particles have been studied dispersed in a polymer, in powder form, and embedded in a permalloy ferromagnetic matrix which was deposited by sputtering techniques. DC magnetization and electron spin resonance were employed for analysing the magnetic response in these samples, showing a very good agreement with the structural characterization. The thermal stability has been probed in the three systems and the magnetic measurements allowed us to estimate a threefold increase in the energy barrier when the particles are immersed in a ferromagnetic host.
机译:我们已经开发出一种构建纳米颗粒系统的替代方法,并分析了其磁性。使用化学途径,我们获得了平均直径为4.5 nm且尺寸分布非常窄(σ<= 20%)的磁铁矿纳米颗粒。已经研究了这些颗粒以粉末形式分散在聚合物中,并包埋在坡莫合金铁磁性基质中,该基质通过溅射技术沉积。直流磁化和电子自旋共振被用于分析这些样品中的磁响应,显示出与结构表征非常好的一致性。在这三个系统中已经探究了热稳定性,并且通过磁学测量,我们可以估算出当将粒子浸入铁磁基质中时能垒增加了三倍。

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