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Electrical Properties of Nanostructured Magnetic Colloid and Influence of Magnetic Field

机译：纳米结构磁性胶体的电学性质及磁场的影响

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摘要

We investigate the electrical properties of the nanostructured magnetic colloid without and with magnetic Held. The competition between the directional motion of the charged magnetic nanoparticles and other minor nonmagnetic impurities (also small amount of ions) under applied voltage and their random orientation due to thermal activation is implemented to elaborate the electrically conduction mechanism under zero magnetic Geld. Two equivalent electric circuits are employed for explaining the charging and discharging processes. The tunnelling conduction mechanism upon application of externally magnetic field may exist in the nanostructured magnetic colloid. The alternation of the two conduction mechanisms accounts for the current spikes when the magnetic field is switched on or off. This work presents the peculiar electrical phenomena of the magnetically colloidal system.
机译：我们研究了纳米结构磁性胶体的电学性质。实施带电磁性纳米粒子与其他较小的非磁性杂质（还有少量离子）的定向运动之间的竞争以及由于热激活而产生的随机取向之间的竞争，以阐明零磁性Geld下的导电机理。使用两个等效电路来说明充电和放电过程。纳米结构的磁性胶体中可能存在施加外部磁场时的隧穿传导机制。当磁场打开或关闭时，两种传导机制的交替说明了电流尖峰。这项工作提出了磁胶体系统的特殊电现象。

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  • 来源
    《中国物理快报：英文版》 |2007年第11期|3253-3256|共4页
  • 作者

    PU Sheng-Li; CHEN Xian-Feng; DI Zi-Yun; GENG Tao; XIA Yu-Xing;

  • 作者单位

    College of Science, University of Shanghai for Science and Technology, Shanghai 200093;

    Department of Physics, The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, Shanghai 200240;

    Department of Physics, The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, Shanghai 200240;

    College of Science, University of Shanghai for Science and Technology, Shanghai 200093;

    Department of Physics, The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, Shanghai 200240;

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 物理学;
  • 关键词

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