Magnetic-field-tuned Insulator to Conductor Transition in Magnetorheological Suspension
Magnetic-field-tuned Insulator to Conductor Transition in Magnetorheological Suspension
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DOI：
10.4283/jmag.2014.19.4.345
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发表时间：
2014-12
影响因子：
0.5
通讯作者：
Xiongbo Yang;Yuhuan Jiang;Yuehua Huang;Ruizhen Xu;H. Piao;G. Jia;X. Tan
中科院分区：
文献类型：
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作者：
Xiongbo Yang;Yuhuan Jiang;Yuehua Huang;Ruizhen Xu;H. Piao;G. Jia;X. Tan
磁流变悬浮液是一种智能材料，由于其特殊的流变特性，有可能给许多工业部门带来革命性的变化。本文将羰基铁（CI）微粒分散在油酸硅油中，制备了MRS。我们发现，MRS的电导率是显着影响的外部磁场的强度施加。在施加外部磁场后，电阻值可以从无穷大变化到低于300 Ω。结果表明，这种磁共振晶体具有磁场调谐绝缘体到导体转变的特性。该系统在可控磁共振电子装置中具有潜在的应用价值。
Magnetorheological suspensions (MRSs) are smart materials that have the potential to revolutionize several industrial sectors because of their special rheological behaviors. In this paper, MRS, based on carbonyl iron (CI) microparticles that were dispersed in silicone oil with oleic acid, were prepared. We showed that the electroconductibility of MRS was significantly influenced by the intensity of the external magnetic field that was applied. The resistance value can vary from infinite to below 300 Ω after applying an external magnetic field. The results indicated that this MRS had the property of magnetic-field-tuned insulator to conductor transition. This system has potential applications in controllable MRS electrical devices.