Electrical studies of Barkhausen switching noise in ferroelectric lead zirconate titanate (PZT) and BaTiO3: critical exponents and temperature-dependence

被引：11
作者：
Flannigan, C. [1 ]
Tan, C. D. [1 ]
Scott, J. F. [1 ]
机构：
[1] Univ St Andrews, Sch Phys & Chem, St Andrews KY16 9SS, Fife, Scotland
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2020年 / 32卷 / 05期
基金：
英国工程与自然科学研究理事会;
关键词：
critical exponents; ferroelectricity; avalanche; DOMAIN-WALL MOTION; ACOUSTIC-EMISSION; PHASE-TRANSITION; THIN-FILMS; POWER-LAW; FIELD; POLARIZATION; AFTERSHOCKS; DYNAMICS; HYSTERESIS;
D O I：
10.1088/1361-648X/ab4d87
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Previous studies of Barkhausen noise in PZT have been limited to the energy spectrum (slew rate response voltages versus time), showing agreement with avalanche models; in barium titanate other exponents have been measured acoustically, but only at ambient temperatures. In the present study we report the Omori exponent (0.95 +/- 0.03) for aftershocks in PZT and extend the barium titanate studies to a wider range of temperature.
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页数：8
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