BaSm_(0.2)Ti_((4+x))O_((9.3+2x))微波介质陶瓷的研究  

Study on BaSm_(0.2)Ti_((4+x))O_((9.3+2x))Microwave Dielectric Ceramics

作　　者：吴伟杰 庄河辉 姚金强 杨永莹 陶锋烨 WU Weijie;ZHUANG Hehui;YAO Jinqiang;YANG Yongying;TAO Fengye(Zhejiang Jiakang Electronics Co., Ltd.,Jiaxing 314000,China)

机构地区：[1]浙江嘉康电子股份有限公司,浙江嘉兴314000

出　　处：《压电与声光》2021年第6期771-774,共4页Piezoelectrics & Acoustooptics

摘　　要：该文采用固相法制备了BaSm_(0.2)Ti_((4+x))O_((9.3+2x))(x=0~0.6为摩尔分数)陶瓷,研究了不同x值对陶瓷相组成、显微结构和微波介电性能的影响。结果表明,在0≤x≤0.6时,随着x的增大,介电常数ε_(r)变化较小,品质因数与频率之积(Q×f)和频率温度系数τ_(f)均随x的增大而减小。当x=0.5时,可获得介电性能优异的BaSm_(0.2)Ti_((4+x))O_((9.3+2x))陶瓷:ε_(r)=46.9,Q×f≈18237 GHz,τ_(f)≈2.2×10^(-6)/℃。The BaSm_(0.2)Ti_((4+x))O_((9.3+2x))(x=0~0.6)ceramics were prepared by the solid-state reaction technique.The effects of different x values on the phase composition,microstructure and microwave dielectric properties of the ceramics were studied.The results showed that in the range of 0≤x≤0.6,the dielectric constantε_(r) changes little with the increase of x,while the Q×f value and the frequency temperature coefficient τ_(f) decreases with the increase of x.When x=0.5,BaSm_(0.2)Ti_((4+x))O_((9.3+2x))ceramics showed good dielectric properties with ε_(r) of 46.9,Q×f of about 18237 GHz and τ_(f) of about 2.2×10^(-6)/℃.

关 键 词：微波介质陶瓷 介电性能 Ba_(2)Ti_(9)O_(20) BaTi_(4)O_(9) 中等介电常数 

分 类 号：TM384[电气工程—电机] TM28[一般工业技术—材料科学与工程]