摘要
作为重要的铁电陶瓷材料之一,PbZr0.52Ti0.48O3(PZT)陶瓷因其广泛的工业应用而成为研究的焦点。通过水溶的溶胶-凝胶法,合成了PbZr0.52Ti0.48O3陶瓷片。通过拉曼光谱测试技术结合高压实验,系统地研究了PZT(MPB-PZT:PbZr0.52Ti0.48O3)陶瓷在不同压力下的拉曼光谱。拉曼光谱实验结果分析表明,在0~25GPa的压力范围内,随着静水压力的增加,在压力为2.61GPa时,PZT陶瓷发生了从三方-四方混合相到四方-立方混合相的结构相变,随着压力继续增大到8.5GPa,PZT陶瓷完全相变为顺电立方相。同时,对PZT陶瓷片的介电常数进行了测试,确定PZT陶瓷片的居里温度为395℃。
As one of the most important ferroelectric ceramic materials,PbZr0.52Ti0.48O3(PZT)ceramic has been widely studied because of its extensive industrial application.We prepared the PZT ceramic using a simple water-based sol-gel method,and studied its Raman spectra as a function of high pressure.Raman spectroscopy analysis show that the phase transition pressure from rhombohedral-tetragonal(R+T)to tetragonal-cubic(T+C)phases is 2.61 GPa and the pressure for T+C to C phase is8.5GPa.We also measured the dielectric constant of the PZT ceramic,the result suggests that the Curie temperature of the PZT ceramic is 395 ℃.
出处
《高压物理学报》
CAS
CSCD
北大核心
2015年第2期95-98,共4页
Chinese Journal of High Pressure Physics
基金
中国科学技术部973项目(2009CB623301)
