所属单位：材料科学与工程学院

发表刊物：Materials Science and Technology (MS&T) 2008

关键字：中文关键字：介电性能；弛豫行为；弥散相变；钛酸钡，英文关键字：dielectric properties；relaxation behivior；diffuse

摘要：12 at. % strontium doped Ba1-xSrxTiO3 (BST, x=0.10, 0.20 and 0.30) ceramics prepared by the conventional mixed oxide method were investigated. Sn doping significantly decreases the peak dielectric constant of BST ceramics and shifts the temperature of the peak dielectric constant to lower temperature for the different compositions. BST exhibits a normal-like ferroelectric behavior while a dielectric relaxation behavior was observed in strontium doped BST, and the degree of the diffuseness and the relaxation of BST ceramics increases after introducing Sn. The results indicate that the selected system exhibits one broad dielectric peak in 12 at. % strontium doped BST ceramics with increasing x, i.e., the two phase transitions in BST ceramics are merged into one broad peak in 12 at. % strontium doped BST ceramics. The abnormal dielectric behavior can be attributed to non-equivalence ions co-substitution to A- and B-site in ABO3 perovskite structure.

备注：云斯宁

合写作者：delongXu,xiaoliLi,HuiLi

第一作者：云斯宁

论文类型：期刊论文

卷号：卷：08

期号：期：08

页面范围：页：231-241

是否译文：否

发表时间：2008-10-01