钴钇掺杂(Ba,Sr)TiO_3基介电陶瓷的制备与性能研究  

Preparation and Properties of Y^(3+)/Co^(3+) Doping (Ba,Sr)TiO_3 Dielectric Ceramic

作　　者：王学荣[1] 刘全生[1] 万玉春[1] 

机构地区：[1]长春理工大学材料科学与工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2012年第2期142-144,共3页Journal of Changchun University of Science and Technology(Natural Science Edition)

摘　　要：采用二次固相反应法制备Ba0.7Sr0.3TiO3介电陶瓷,研究了掺杂钴、钇离子对钛酸锶钡介电性能的影响。结果表明,陶瓷样品Y3+、Co3+的最佳掺杂浓度分别为0.04mol%和0.05mol%,最佳烧结温度为1340℃,样品的相对介电常数为4200,介电损耗(tanδ)为0.005。样品的结构为四方晶系,P4mm空间群。获得了高介电常数、低损耗的Ba0.7Sr0.3TiO3介电陶瓷。Dielectric ceramics of Bao.TSr0.3TiO3 were prepared by two step Solid-state reaction metnoa, l ne enects of cu- bali and yttrium ion on dielectric properties of gaoTSro3TiO3 were studied.Results indicted that the best doping concentra- tions of y3＋, Co3＋ ions in ceramic samples are 0.04mo1% and 0.05mo1% respectively, Optimum sintering temperature is 1340 ~C, The relative dielectric constant of ceramic sample is 4200, and the dielectric loss （tan6） is 0.005.Sample structure is tetragonal, P4mm space group.A Bao.TSro.3TiO dielectric ceramics with high dielectric constant and low loss was obtained.

关 键 词：(Ba Sr)TiO3陶瓷 介电性能 Y3+/Co3+掺杂 

分 类 号：TB34[一般工业技术—材料科学与工程] O614.32[理学—无机化学]