Orientation-dependent, field-induced phase transitions in soft lead zirconate titanate piezoceramics
Orientation-dependent, field-induced phase transitions in soft lead zirconate titanate piezoceramics
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DOI：
10.1016/j.jeurceramsoc.2021.01.043
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发表时间：
2021-01
影响因子：
5.7
通讯作者：
Jianwei Zhao;Stephen D. Funni;E. Molina;E. Dickey;Jacob L. Jones
中科院分区：
文献类型：
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作者：
Jianwei Zhao;Stephen D. Funni;E. Molina;E. Dickey;Jacob L. Jones
利用原位高能X射线衍射（XRD）技术研究了在准同型相界（MPB）附近合成的锆钛酸铅基铁电材料。利用的二维区域检测器insituationfield依赖的实验，使材料的响应相对于所有方位角在每个字段的振幅的完整分析。研究表明，场致相变从四面体到菱面体是依赖于Nb掺杂的PbZr0.53Ti0.47O3的晶体取向是在密切的组成接近MPB。然而，只有畴壁运动被激活的Nb掺杂的PbZr0.50Ti0.50O3，这是进一步从MPB的组合物。这种基于同步加速器的XRD表征方法说明了在压电和铁电多晶材料中评估相变的取向依赖性的重要性。
In situhigh-energy X-ray diffraction (XRD) was performed on lead-zirconate-titanate-based ferroelectric materials with composition near the morphotropic phase boundary (MPB). The utilization of the two-dimensional area detector inin situfield-dependent experiments enables the complete analysis of the material response with respect to all azimuthal angles at each field amplitude. The studies reveal that the field-induced phase transition from tetragonal to rhombohedral is dependent on crystal orientation in Nb-doped PbZr0.53Ti0.47O3that is in close compositional proximity to the MPB. However, only domain wall motion is activated in Nb-doped PbZr0.50Ti0.50O3, which is further in composition from the MPB. This synchrotron-based XRD characterization approach illustrates the importance in evaluating the orientation-dependence of phase transitions in piezoelectric and ferroelectric polycrystalline materials.