PZT phase diagram determination by measurement of elastic moduli
PZT phase diagram determination by measurement of elastic moduli
复制标题
DOI：
10.1016/j.jeurceramsoc.2004.07.018
复制
发表时间：
2005-08
影响因子：
5.7
通讯作者：
A. Bouzid;E. Bourim;M. Gabbay;G. Fantozzi
中科院分区：
文献类型：
--
作者：
A. Bouzid;E. Bourim;M. Gabbay;G. Fantozzi
本文的目的是研究 PZT 相图，并通过弹性模量测量来检查同形相界附近低温范围内发生的相变。还通过 XRD 测量研究了作为温度函数的相变。 XRD 图案作为温度的函数，让我们能够跟踪晶格参数的演变，从而确定相变。由杨氏和剪切模量异常 M1 和 M2 识别的相变与 XRD 研究发现的相变一致，分别对应于立方顺电相和四方铁电相之间的居里转变，以及铁电四方相和菱形相之间或从四方相到单斜相之间的同形转变。最后提出了 PZT 相图的重新审视版本。
The aim of the present paper is to investigate the PZT phase diagram and to examine the phase transitions occurring in the low temperature range near the morphotropic phase boundary by using measurement of elastic moduli. The phase transitions are also studied by XRD measurements as a function of temperature. XRD patterns as a function of temperature let us to follow the evolution of lattice parameters and so the determination of phase transitions. Phase transitions identified by Young's and shear modulus anomalies M1and M2are in accordance with those found by XRD studies and correspond, respectively to the Curie transition—between cubic paraelectric phase and tetragonal ferroelectric phase—and to the morphotropic transition—between both ferroelectric tetragonal and rhombohedral phases or from tetragonal to monoclinic phase. Finally a revisited version of PZT phase diagram is proposed.