化学学报 ›› 2001, Vol. 59 ›› Issue (4): 528-532. 上一篇    下一篇

研究论文

CoFe2-xMnxO4纳米晶薄膜的结构、磁性及磁光效应研究

周彪;程福祥;瘳春生;严纯华;陈良尧;赵海滨   

  1. 北京大学稀土材料化学与应用国家重点实验室;北京大学-香港大学稀土材料和 生物无机化学联合实验室;复旦大学物理学系.上海(200433)
  • 发布日期:2001-04-15

Microstructure, magnetic and magneto-optical properties of Co-Mn ferrite nanocrystalline films

Zhou Biao;Cheng Fuxiang;Chou Chunsheng;Yan Chunhua;Chen Liangyao;Zhao Haibin   

  1. Fudan Univ., Dept of Physics.Shanghai(200433)
  • Published:2001-04-15

为了改善磁光材料CoFe2O4的磁学特性,本研究利用改进的溶胶-凝胶法在单晶硅衬底上制备了不同掺杂量的CoFe2-xMnxO4(x=0~2,0)纳米晶薄膜系列样品。并对其结构、磁性及磁光效应进行了研究。结果表明,Mn^3+的掺入可以有效地控制和降低CoFe2O4的居里温度,并可显著地增强薄膜的磁光效应。

关键词: 氧化锰, 氧化铁, 氧化钴, 纳米相材料, 薄膜, 晶体, 磁性, 溶胶-凝胶法

The sol-gel synthesis of CoFe2-xMnxO4 (x=0~2,0) nanocrystalline films has been accomplished on monocrystalline silicon substrates and the influence of mn^3+ on structure, magnetic and magneto-optical (MO) properties of the resultant ferrite examined. The results reveal that Mn can effectively lower the Curie temperature of Co ferrite and the magneto-optical properties is enhanced by Mn^3+ doping.

Key words: MANGANESE OXIDE, IRON OXIDE, COBALT OXIDE, NANOPHASE MATERIALS, THIN FILMS, CRYSTALS, MAGNETISM, SOL GEL PROCESS

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