物理学报2012，Vol.61Issue(22)：421-425,5.
稀土元素La掺杂BaFe12O19微结构和磁性能的研究术
Study on the structural and magnetic properties of La-doped barium ferrites
摘要
Abstract
Magnetic properties of La doped M-type barium ferrites are studied. The samples are prepared by the standard solid state reaction method. The influences of La3+ on structures and magnetic properties of barium ferrites (Ba1-xLaxFe12019) are investigated. Single- phase M-type barium ferrites with chemical composition of Ba1-xLaxFe12O19 (x = 0.0~0.6) are formed by sintering at 1100- 1175 ℃ in air. Scanning electron microscopy (SEM) reveals that the La doping has no effect on the structure of barium ferrite. Vibrating sample magnetometer (VSM) shows that with the valaue of x increasing, the saturation magnetization (Ms) increases, reaching a maximum at x = 0.2 and then decreases and the coercivity of the sample increases continuously. The value of Ms reaches a maximum value of 62.8 emu/g at x = 0.2 and 1175 ℃, and the He reaches a maximum value of 3911.5 Oe at x = 0.6 and 1125℃.关键词
磁性能/钡铁氧体/镧掺杂Key words
magnetic properties/barium ferrite/La-substituted分类
信息技术与安全科学引用本文复制引用
李颉,张怀武,李元勋,李强,秦军锋..稀土元素La掺杂BaFe12O19微结构和磁性能的研究术[J].物理学报,2012,61(22):421-425,5.基金项目
国家重点基础研究发展计划（批准号：2012CB933100）、自然科学青年基金（批准号：61001025）、重点实验室开放基金（批准号：KFJJ201102）和中央高校基本科研业务费（批准号：ZYGX2011X006）资助的课题. （）
