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Study of magnetic nanoparticles produced by surfactant assisted ball milling.

机译：表面活性剂辅助球磨生产的磁性纳米颗粒的研究。

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摘要

Magnetic nanoparticles have applications in advanced permanent magnets, magnetic recording media, magnetic fluids as well as in biotechnology. Production of hard magnetic nanoparticles of SmCo5, Sm2Co 17 and Nd2Fe14B has been and still is an open challenge. In this study, an attempt has been made to prepare hard and soft magnetic nanoparticles by ball milling. Several hard and soft magnetic materials have been investigated including SmCo5, Sm2Co17 , Nd2Fe14B, BaFe12O19, Fe, Co, and FeCo. Effect of surfactants on the nanoparticle formation and dispersion during ball milling has been investigated. Interesting experimental findings related to the particle size, shape, composition, and magnetic properties have been observed. Elongated rod-like nanoparticles were obtained by milling SmCo5, Sm2Co17, Nd2Fe14B, and Co materials which are important for fabrication of anisotropic nanostructured magnets.
机译：磁性纳米粒子可用于高级永磁体，磁记录介质，磁流体以及生物技术中。 SmCo5，Sm2Co 17和Nd2Fe14B的硬磁纳米颗粒的生产一直是而且仍然是一个挑战。在这项研究中，已经尝试通过球磨制备硬和软磁性纳米粒子。已经研究了几种硬磁和软磁材料，包括SmCo5，Sm2Co17，Nd2Fe14B，BaFe12O19，Fe，Co和FeCo。研究了表面活性剂对球磨过程中纳米颗粒形成和分散的影响。已经观察到与粒径，形状，组成和磁性有关的有趣实验发现。通过研磨SmCo5，Sm2Co17，Nd2Fe14B和Co材料获得细长的棒状纳米颗粒，这对于制造各向异性纳米结构磁体很重要。

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  • 作者

    Chakka, Vamsi Mohan.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Engineering Materials Science.; Engineering Mechanical.
  • 学位 M.S.
  • 年度 2005
  • 页码 119 p.
  • 总页数 119
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;机械、仪表工业;
  • 关键词

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