Phase transitions,Dielectric and Piezoelectric properties of BiScO3-PbTiO3 Ceramic Solid Solutions

摘要：

　　Dielectric and piezoelectric properties of ceramic solid solutions based on the compositions close to the MPB in the system (1-x)BiScO3-xPbTiO3 (x-0.63,0.635,0.64) have been studied.The 1st order phase transitions were observed at temperatures near 700 K.Increase in the lead titanate content stimulates slight increase in the Tc value.Cr2O3 additives in amounts up to 0.2 w.% favor to the decrease of total conductivity and dielectric loss at high temperatures.Increase in the d33 and kt piezocoefficients was observed in modifed ceramic.Besides peaks in temperature dependences of dielectric permittivity and dielectric loss marked ferroelectric to paraelectric phase transitions,effects of dielectric relaxation,determined by oxygen vacancies were revealed.

关键词： BiScO3-PbTiO3 chromium oxide additives ferroelectric piezoelectric properties

作者: Ekaterina D.Politova Galina M.Kaleva Alexander V.Mosunov Andrei G.Segalla Jiangtao Zeng

作者单位: L.Ya.Karpov Institute of Physical Chemistry,Obukha s.-st.,3-1/12,105064,Moscow,Russia ELPA Company,Panfilovsky pr.10,Zelenograd,124460,Moscow,Russia Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,200050,China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 1363-1366

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）