易彩堂app主页

以后地位: 首页» 学术讲述

[预报]Magnetic Hardening in Nanowires

工夫:2018-06-04

工夫:20186515:30-16:30

地址:学术讲述厅

讲述问题:Magnetic Hardening in Nanowires

讲述人:J.P. Liu

Department of Physics, University of Texas at Arlington, Texas, USA

讲述内容It is of a grand challenge to develop strong magnetic anisotropy in nanostructured bulk permanent magnets. Recently, we have worked on bottom-up approaches to produce hard magnetic materials based on magnetic nanoparticles with high aspect ratio. The approaches start from synthesis of ferromagnetic nanowires and nanorods with modified solvothermal synthesis techniques. We have successfully synthesized monodisperse nanorods, nanowires and submicron chips of ferromagnetic FePt, FeCo, CoNi, CoCx and Co based materials. The aligned Co nanowires have their coercivity values exceeding 10 kOe and energy product exceeding 40 MGOe. The ferromagnetic nanoparticles are used as building blocks for advanced bulk and thin film permanent magnets, and can be also applied in biomedicine and ferrofluid technologies.