La掺杂Co-Fe-O纳米磁性材料的制备和表征  

Preparation and Characterization of Co-Fe-O Magnetic Nanocrystalline Materials by La-doping

作　　者：盛国定[1] 沈良[1] 张义建[1] 高建军[1] 

机构地区：[1]杭州师范学院理学院化学系,浙江杭州310036

出　　处：《科技通报》2003年第3期211-214,共4页Bulletin of Science and Technology

基　　金：浙江省教育厅研究基金资助项目

摘　　要：以Fe(NO3)3·9H2O,Co(NO3)2·6H2O和La2O3为原料,首先制备出晶粒细小的盐渍化碱式碳酸盐前驱体,在400℃、500℃、600℃、700℃、800℃分别烧结1h,制备出CoFe2O4和LaCo0.4Fe0.6O3纳米磁性材料,并用XRD、SEM和IR对样品进行表征,研究了不同的烧结温度和La掺杂对物相的形成及颗粒大小的影响.Basic carbonate precursor with very fine crystalline grain is first prepared by using Fe(NO3)3·9H2O, Co(NO3)2·6H2O and La2O3 as raw materials. Then the precursor is roasted at different temperatures(400℃?500℃?600℃?700℃?800℃) for 1 h with the result that magnetic nanocrystalline CoFe2O4 and LaCo0.4Fe0.6O3 materials are obtained. They are characterized by XRD, SEM and IR, and the effects of sintered condition and Ladoping on compound composition of phases and grain size of the products are also studied.

关 键 词：无机化学 LA掺杂 COFE2O4 纳米磁性材料 制备 

分 类 号：O611[理学—无机化学]