Stress dependence of the polarized Raman spectrum of polycrystalline lead zirconate titanate
Stress dependence of the polarized Raman spectrum of polycrystalline lead zirconate titanate
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DOI：
10.1063/1.2715542
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发表时间：
2007-04
影响因子：
3.2
通讯作者：
M. Deluca;Tatsuo Sakashita;Wenliang Zhu;H. Chazono;G. Pezzotti
中科院分区：
文献类型：
--
作者：
M. Deluca;Tatsuo Sakashita;Wenliang Zhu;H. Chazono;G. Pezzotti
用偏振拉曼探针研究了弛豫基铁电多晶锆钛酸铅-镍钛酸铅-锌钛酸铅（PZT-PNN-PZN）的拉曼谱的应力依赖性。重点放在明确地制定出的二次谐波方程，关系到拉曼强度之间的角度激光偏振方向和选定的晶轴。基于这些评估，晶体取向对选定的拉曼模式的强度偏振光下的效果已被合理化，并解释所获得的实验数据。拉曼光谱用平行和交叉偏振滤光片收集，并且它们对应力的依赖性通过在四点弯曲夹具中加载PZT-PNN-PZN样品来校准。偏振光的使用使我们能够澄清畴取向对PZT-PNN-PZN的拉曼光谱的影响，并对A1（TO 4）拉曼光谱的应力依赖性进行精确校准。
The stress dependence of the Raman spectrum of a relaxor-based polycrystalline ferroelectric lead zirconate titanate–lead nickel niobate–lead zinc niobate (PZT–PNN–PZN) has been investigated using polarized Raman microprobe spectroscopy. Emphasis has been placed on explicitly working out the second harmonic equations that relate Raman intensities to the angle between the laser polarization direction and selected crystalline axes. Based on these assessments, the effect under polarized light of crystal orientation on the intensity of selected Raman modes has been rationalized and the obtained experimental data interpreted. Raman spectra were collected with both parallel and cross polarization filters and their dependence on stress calibrated with loading the PZT–PNN–PZN samples in a four-point flexural jig. The use of polarized light allowed us to clarify the effect of domain orientation on the Raman spectrum of PZT–PNN–PZN and to perform precise calibrations of the stress dependence of the A1(TO4) Raman mo...