摘要
采用添加剂湿法制备了掺入不同Ｃｅ含量的Ｃｅｘ（ＣｏＦｅ）３－ｘＯ４铁氧体。对产物的物相、形貌、磁性能研究表明，所得产物均为单一的尖晶石结构，一般情况下呈颗粒状，矫顽力随溶液中Ｃｅ４＋浓度的增加而增加。当溶液中含有Ｃｅ３＋和Ｃｅ（ＯＨ）４时，产物显示有部分棒状晶体，矫顽力有明显提高，且当［Ｃｅ３＋］占（［Ｃｅ３＋］＋［Ｃｅ４＋］）总量的５％左右时所得产物矫顽力最大。
Cex(CoFe)3-xO4 ferrites with different contents of Ce have been prepared by hydrochemical method.The phases,morphologies and magnetic properties of the products were studied.It has been found that the products were a single phase with spinel structure and consisted of granular particles in most cases.The coercive force of the products increased with the increase of concentration of Ce4+ in the reaction solution.On the other hand,when Ce3+ and Ce(OH)4presented in the reaction solution,some rod-shape crystals in the products were observed,which causes a great increase in coercive force,and the optimum value was obtained when [Ce3+] was about 5% of the total([Ce3+]+[Ce4+]).
出处
《中国稀土学报》
CAS
CSCD
北大核心
1996年第3期229-233,共5页
Journal of the Chinese Society of Rare Earths
关键词
掺杂
矫顽力
铁氧体
铈
磁性
Ce-doped,(CoFe)_3O_4,Ce_x(CoFe)_(3-x)O_4,Coercive force,Morphologies
