摘要
采用固相法制备了Pb[(Mg1/3Nb2/3)0.536(Ni1/3Nb2/3)0.128Ti0.336]O3(PMNNT)和CoFe2O4不同组分的颗粒复合材料。复合材料在1200℃烧结后,仍保持PMNNT和CoFe2O4结构,没有新相生成,但由于不同相之间存在元素扩散,材料的性能有了改变。该材料具有铁电和铁磁特征,表现出较高的介电常数,高压电系数,较高的饱和磁化强度,低矫顽力和高磁致伸缩效应等特征,并表现出磁电效应。
Magnetoelectric particulate composites of Pb[（Mg1/3Nb2/3）0.536（Ni1/3Nb2/3）0.128Ti0.336]O3 （PMNNT） and CoFe2O4 with various compositions were prepared by conventional ceramic calcining. PMNNT and CoFe2O4 structures were kept and no new phases were formed in the samples after sintering at 1 200 ℃. However, element diffusion occurred between PMNNT and CoFe2O4 phases. The composites exhibit good ferroelectric and magnetic properties, such as higher dielectric constant, high piezoelectric constant, high saturation magnetization, low coercivity and high magnetostriction. The composites also demonstrated a magnetoelectric effect.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2006年第10期1213-1219,共7页
Journal of The Chinese Ceramic Society
基金
国家重点基础研究发展规划(2002CB613303
G200006718)
国家自然科学基金(50318002)资助项目
关键词
复合材料
介电性能
铁电性能
磁学性能
磁电效应
composite
dielectric properties
ferroelectric properties
magnetic properties
magnetoelectric effect
