摘要
通过对铌锌酸铅基铁电陶瓷（０．９－ｘ）ＰＺＮ－０．１ＢＴ－ｘＰＴ，（ｘ＝０．０５，０．１５）在０～４５０°Ｃ热膨胀行为的详细测量，结合其相应温度范围内的介电温谱，发现一个弱的一级相变过程，进而探讨了复合钙钛矿结构弛豫型铁电体中局域极化的转变特征。
Thermal expansion of (0.9- x )Pb(Zn 1/3 Nb 2/3 )O 3 0.1BaTiO 3 x PbTiO 3[ x = 0.05, 0.15,designated as PZN BT PT(10/100 x )]ferroelectric ceramics have been carefully measured as a function of temperature between 0 °C and 450 °C. Comparing with the dielectric response, an anomaly first order phase transition can be observed for PZN BT PT(10/15) and its absence in PZN BT PT(10/5).This anomaly has been discussed briefly using local polarization model.
出处
《压电与声光》
CAS
CSCD
北大核心
1997年第6期424-426,共3页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金
关键词
铌锌酸铅
铁电陶瓷
热膨胀
局域极化
PZN,ferroelectric ceramics, thermal expansion, local polarization
