PbFe1/2Nb1/2O3弛豫剂的高温声效应

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI:10.1109/ISAF.2012.6297789

E. Smirnova, A. Sotnikov, S. Ktitorov, H. Schmidt, M. Weihnacht

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引用次数: 0

摘要

在200 ~ 700 K的温度范围内，用脉冲回波技术测量了PbFe1/2Nb1/2O3和pbfe1 / 3nb2 / 3o3陶瓷在10 MHz频率下的纵波速度和衰减。声速和衰减行为随温度变化的异常与弛豫铁电态(PbFe1/2Nb1/2O3)的温度范围和Burns温度有关。

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High temperature acoustic effects in relaxors PbMg1/3Nb2/3O3 and PbFe1/2Nb1/2O3

The longitudinal acoustic wave velocity and attenuation in PbFe_1/2Nb_1/2O₃ and PbMg_1/3Nb_2/3O₃ ceramics have been measured by pulse-echo technique at a frequency of 10 MHz in the temperature range from 200 to 700 K. The anomalies observed in the sound velocity and attenuation behavior versus temperature are correlated with temperature range of relaxor ferroelectric state (PbFe_1/2Nb_1/2O₃) and Burns temperatures.

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Proceedings of ISAF-ECAPD-PFM 2012

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