磁组装薄膜材料的结构及磁各向异性研究  

Study on Structures and Magnetic Anisotropy of Magnetically Self-assembled Films

作　　者：王智勇[1] 徐丹[2] 

机构地区：[1]中国航空工业集团北京航空材料研究院,北京100095 [2]南京晓庄学院生物化工与环境工程学院,南京211171

出　　处：《材料导报》2015年第8期25-28,共4页Materials Reports

基　　金：航空科学基金项目(20123121007)

摘　　要：在近平行方向磁场作用下,制备出有序平行线形阵列结构的纳米Fe3O4/氟碳树脂磁组装薄膜材料。利用偏光显微镜和紫外-可见-近红外分光光度计(UVPC)研究不同场强条件以及不同粉体含量对薄膜内部阵列结构的影响;采用振动样品磁强计(VSM)研究不同条件下磁组装薄膜的磁各向异性。结果表明:随着磁场强度增加,阵列变得越来越密集,随着Fe3O4含量的增加,线形阵列逐渐变粗;磁组装薄膜具有明显的磁各向异性,且随着磁场强度增加以及粉体的减少其等效磁各向异性常数逐渐增大。The magnetic nano-Fe3O4/fluorocarbon resin films materials, which had the ordered parallel linear array structures, were fabricated under nearly parallel direction of magnetic field. The influences of magnetic field strength and powder content on the inner array structures in films were studied by polarizing microscope and ultravio- let-visible-near infrared spectrophotometer （UVPC）. Vibrating sample magnetometer （VSM） was used to study the magnetic anisotropy of the magnetically self-assembled films with different conditions. The results showed that the ar- rays became more and more intense with the increase of magnetic field strength. Along with the increase of the con- tents of Fe3O4, the linear array coarsened gradually. The magnetically self-assembled films had obvious magnetic ani- sotropy. With the increase of magnetic field strength and powder, the equivalent magnetic anisotropy constant in- creased gradually.

关 键 词：磁组装 有序结构 磁各向异性 

分 类 号：TB34[一般工业技术—材料科学与工程]