摘要
采用固相合成法制备出尖晶石结构CoFe_2O_4粉末和钙钛矿结构BaTiO_3,并按照2∶8的摩尔比将粉末混合,随后添加不同的助烧剂。研究多种助烧剂对制备出的CoFe_2O_4/BaTiO_3复相多铁材料成分、微观形貌、介电性能、铁电性和磁性能的影响。结果表明:仅添加助烧剂Bi2O3,难以达到烧结致密的目的;当助烧剂中含有CaCO3-SiO2时,有效提高了CoFe_2O_4/BaTiO_3复相多铁材料的烧结性能,在相同的烧结温度下,CoFe_2O_4/BaTiO_3复相多铁材料致密度得到提升,且介电性能、铁电性、磁性能均有一定程度的优化。
CoFe2O4powders of spinel structure and BaTiO3 powders of perovskite structure were prepared using solid phase synthesis.Then the powders were mixed in the molar ratio of 2∶8.The different sintering aids were added.The effect of additive on composition microstructure,dielectric properties,ferroelectric properties and magnetic properties of CoFe2O4/BaTiO3 multiphase magnetoelectric material were studied.The results show that it is difficult to achieve the purpose of sintering densification when only Bi2O3 is added;when sintering aids containing CaCO3-SiO2,the sintering performance of CoFe2O4/BaTiO3 multiphase magnetoelectric material is improved.At the same sintering temperature,the density of CoFe2O4/BaTiO3 multiphase magnetoelectric material is improved,and the dielectric properties,ferroelectric and magnetic properties are optimized for a certain degree.
作者
李亚
代建清
张瑞浩
程振宇
LI Ya DAI Jianqing ZHANG Ruihao CHENG Zhenyu(Faculty of Material Science and Engineer, Kunming University of Science and Technology, Kunming 650093, Chin)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2017年第3期632-637,共6页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(51162019)
国家自然科学基金(51462019)
