SrO掺杂对Ba_(6-3x)Nd_(8+2x)Ti_(18)O_(54)陶瓷性能的影响  

The effect of SrO dopant on the properties of Ba_(6-3x)Nd_(8+2x)Ti_(18)O_(54) ceramics

作　　者：徐建梅[1] 周东祥[1] 黄国华[1] 龚树萍[1] 

机构地区：[1]华中科技大学电子科学与技术系,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2005年第3期7-9,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家高技术研究发展计划资助项目 (2 0 0 1AA ZB32 0 1) .

摘　　要：研究了SrO掺杂对Ba6-3xNd8+ 2xTi18O54晶体晶胞参数及陶瓷微波介电性能的影响 .研究表明 ,对于不同的x值 ,Sr取代Ba存在不同的极限值 ,当x =0 .5时 ,极限值为 0 .110 ;x =0 .6时 ,极限值为 0 .0 4 8;x =2 / 3时 ,极限值为 0 .2 0 0 .超过这一极限 ,Sr将取代Nd .正是由于Sr取代的离子不同 ,而使晶体的晶胞参数呈现不同的变化趋势 ,因而陶瓷的微波介电性能也会发生相应的变化 .The effect of SrO dopant on the Ba 6-3 x Nd 8+2 x Ti 18 O 54 crystal parameters and microwave dielectric properties were studied. The result indicated that for the different x , different limits for Sr substituted for Ba existed. When x =0.5, 0.6 and 2/3, the limit values were respectively 0.110, 0.048 and 0.200. Above these limits Sr was substituted for Nd. Sr substituted for different ions, the crystal parameters showed different changes. These resulted in the changes of microwave dielectric properties of Ba 6-3 x Nd 8+2 x Ti 18 O 54 ceramics. When Sr substituted for Ba, the dielectric constant and resonant temperature coefficient increased with the Sr dopant, but when Sr substituted for Nd, they decreased with the increase of the Sr dopant.

关 键 词：SRO Ba6-3xNd8+2xTi18O54陶瓷 微波介电性能 

分 类 号：O487[理学—固体物理]