水热法合成BaNd_xFe_（12－x）O_（19）铁氧体的研究  

Synthesis of BaNd_xFe_(12-x)O_(19) Ferrite by Hydrothermal Process

作　　者：张密林[1] 赵华[1] 冯守华[1] 

机构地区：[1]哈尔滨工程大学,吉林大学无机水热合成开放实验室

出　　处：《稀土》1996年第2期14-17,共4页Chinese Rare Earths

基　　金：黑龙江省自然科学基金吉林大学无机水热合成实验室

摘　　要：本文利用水热法合成了六角形磁铅石结构的ＢａＮｄｘＦｅ（１２－ｘ）Ｏ（１９）铁氧体，用Ｘ射线衍射仪、透射电子显微镜和振动样品磁强计等仪器对粉末的结构、形貌和磁学性能进行了研究，并讨论了Ｎｄ（３＋）对钡铁氧体磁学性能的影响。结果表明，Ｎｄ（３＋）可以明显提高ＢａＦｅ（１２）Ｏ（１９）粉末的矫顽力。The hexagonal BaNd_xFe_(12-x)O_(19) ferrites with M-type strusture were synthesized by hydrothermal method. The preparation method, process, and the effects of pH value and temperature were examined in details. Pure Nd-hexaferrites were produced at lower temperature. X-Ray diffractometry, magnetic analysis and transmission electron microscope obervations were used for characterizing the synthesized materials. The results shown that rare earth ion Nd￣(3+) can improve the magnetic properties of BaFe_(12)O_(19). The coercive force of BaNd_xFe_(12-x)O_(19) is approximately 50% higher than that of BaFe_(12)O_(19). The mechanism of Nd￣(3+) in BaFe_(12-x)O_(19) was discussed.

关 键 词：水热法 稀土 铁氧体 

分 类 号：TM277[一般工业技术—材料科学与工程]