磁性納米晶顆粒磁化機(jī)制探索

高磁損耗納米晶顆粒是新型電磁波吸收材料的重要研究方向。該文以納米晶結(jié)構(gòu)為基礎(chǔ)，從磁性納米晶交換耦合作用和納米小尺寸表面效應(yīng)出發(fā)，歸納了納米晶顆粒靜態(tài)磁化特性，以及在動(dòng)態(tài)磁化機(jī)制方面展開(kāi)的探索工作，介紹了國(guó)內(nèi)外在該領(lǐng)域的最新研究成果并結(jié)合本實(shí)驗(yàn)室的實(shí)驗(yàn)結(jié)果進(jìn)行討論，最后提出了研究中存在的一些問(wèn)題以及今后該領(lǐng)域的發(fā)

High-permeability nanocrystalline particle is one of the most important approaches to develop the new generation of electromagnetic wave absorbing materials. Based on the exchange coupling, finite-size and surface effect of nanostructure, the static magnetic characterizations and dynamic magnetization mechanism of high-permeability nanocrystalline particles are introduced in this paper. The experimental results are discussed in combination with the recent research development in this field promoted by the local and abroad researchers. Finally, the problems in present work and developing trends of future research were submitted.