Fe_3O_4纳米晶体的制备及磁学性质研究  

Research on Preparation and Magnetic Properties of Fe_3O_4 Nanocrystals

作　　者：韩东来 李博珣 司振君[1] 左青卉[1] HAN Donglai;LI Boxun;SI Zhenjun;ZUO Qinghui(School of Materials Science and Engineering,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学材料科学与工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2018年第6期59-61,75,共4页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金青年科学基金(61705020)

摘　　要：在苄醚中,利用高温热分解法制备不同尺寸及结构的磁性Fe_3O_4纳米粒子。XRD结果表明:不同加热温度和苄醚用量所制得的样品均为纯相Fe_3O_4纳米材料。SEM结果表明:苄醚用量为15ml时,不同加热温度下Fe_3O_4纳米粒子的平均尺寸约为71.3nm,随着加热温度升高,Fe_3O_4纳米粒子的形貌由不规则多面体向截角立方体再向立方体转变;加热温度为300℃时,随着苄醚用量的增加,Fe_3O_4纳米粒子尺寸明显减小,形貌由立方体向不规则多面体转变。SQUID结果表明:Fe_3O_4纳米粒子具有超顺磁性,且随着苄醚含量的增加磁性降低。In the benzyl ether, magnetic Fe3O4 nanoparticles of different sizes and structures were prepared by high tern perature thermal decomposition. XRD results showed that the samples prepared by different heating temperatures and benzyl ether content were pure phase Fe3O4 nanomaterials. The SEM results showed that the average size of Fe3O4 nanoparticles was about 71.3nm at different heating temperatures when the amount of benzyl ether was 15ml. The morphology of Fe3O4 nanoparticles changed from irregular polyhedron to truncated cube to cube with different heating tern perature. The size of Fe3O4 nanoparticles decreased and the morphology changed from cubic to irregular polyhedron with the increase of the amount of benzyl ether, when the heating temperature is 300℃. The results of SQUID showed that the Fe3O4 nanoparticles are superparamagnetic and the saturation magnetization （Ms） was decreased with the increase of benzyl ether content.

关 键 词：高温热分解法 FE3O4纳米粒子 磁学性能 

分 类 号：TB383[一般工业技术—材料科学与工程]