云斯宁 Likes:

Affiliation of Author(s):

材料科学与工程学院

Journal:

Materials Science and Technology (MS&T) 2008

Key Words:

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

Abstract:

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.

Note:

云斯宁

Co-author:

delongXu,xiaoliLi,HuiLi

First Author:

yunsining

Indexed by:

Journal paper

Volume:

卷：08

Issue:

期：08

Page Number:

页：231-241

Translation or Not:

no

Date of Publication:

2008-10-01