Preparation and Characterization of La Doped Ferrite Using Marine Manganese Nodules as Raw Materials
A kind of La doped ferrite was prepared with marine manganese nodules derived from East Pacific sea-bottom as raw material, NaOH as fluxing reagent, La(NO<,3>)<,3> as doping agent, by calcination at 1000℃ for 5h. XRD analysis showed that the ferrite products were of a spinel structure, and that its molecular formula could be expressed as MnFe<,2-x> R<,x>O<,4>. SEM images proved that these ferrites showed octahedral and cubic aspects. It was found that there is some relationship between the La doping amount and the magnetic property of the ferrite. When the La doping amount was 0.03, the susceptibility of the ferrite was maximal. The as-prepared La doped ferrite is a kind of soft magnetic material that is easy to be magnetized with rather weak coercive force.
lanthanum doped marine manganese nodule Mn-ferrite magnetic properties rare earths
Zhang Pingping(张平萍) Han Chenhua(韩沉花) Chenhua(韩沉花) Cheng Jipeng(程继鹏) Chen Xuegang(陈雪刚) Ye Ying(叶瑛)
Department of Earth Science, Zhejiang University, Hangzhou 310027, China Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China Department of Earth Science, Zhejiang University, Hangzhou 310027,China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
477-480
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）