电子元件与材料2017，Vol.36Issue(2)：6-9,4.DOI:10.14106/j.cnki.1001-2028.2017.02.002
钙钛矿锰氧化物Ca0.5Nd0.5（Mn0.7Fe0.3）O3掺杂对Ca0.61Nd0.26TiO3微波介电性能的影响
Effects of perovskite manganese oxidesCa0.5Nd0.5(Mn0.7Fe0.3)O3addition onmicrowave dielectric properties of Ca0.61Nd0.26TiO3ceramics
摘要
Abstract
xCa0.5Nd0.5(Mn0.7Fe0.3)O3-(1–x)Ca0.61Nd0.26TiO3(0.1≤x≤0.25,CNMFTx)ceramics were prepared by the solidstate reaction method. The phases structure, microstructures,sintering behaviorsand microwave dielectric properties of the ceramics were studied.XRD results show thatan orthorhombicperovskite structureisformed in theCNMFTx compositionswithx= 0.1–0.25.With an increasing ofFe3+/Mn3+,4+substitution forTi4+inCNMFTx(x=0.1–0.2)samples sintered at1400℃for 4 h, the relative permittivity (εr), quality factor (Q·f) and temperature coefficient of resonant frequency(τf)decreasegradually from88.5,9370GHz and207.4×10–6/℃to77.5,7010GHzand149.1×10–6/℃, respectively.Whenx= 0.25,theεr(73.4)andτfvalue(119.6×10–6/℃)of the samplesare still decreasedin accordance with theexpectation, however, anobviousdecreasingQ·fvalue(5100 GHz)isfound in the sample withuniformgrain size distribution. Thus, for the microwave ceramic dielectric materials (ABO3perovskite structure), a small number of ferromagnetismFe3+/Mn3+,4+ions additivecan make acoexistence in ferromagnetism and microwave dielectric properties. But an increasingproportion of these ionsadditive can also enhance thedielectric loss due to an increase in ferromagnetism, conductivity and a decrease in magnetoresistance.关键词
正交相/显微结构/铁磁性/Fe3+/Mn3+,4+/微波介电性能/Ca0.61Nd0.26TiO3Key words
orthorhombic/microstructure/ferromagnetism/Fe3+/Mn3+,4+/microwave dielectric properties/Ca0.61Nd0.26TiO3分类
信息技术与安全科学引用本文复制引用
刘飞,屈婧婧,黄先培,刘心宇..钙钛矿锰氧化物Ca0.5Nd0.5（Mn0.7Fe0.3）O3掺杂对Ca0.61Nd0.26TiO3微波介电性能的影响[J].电子元件与材料,2017,36(2):6-9,4.基金项目
国家自然科学基金资助(No.61561011)；广西高校中青年教师基础能力提升项目(No. KY2016YB534) （No.61561011）
