Electrical studies of Barkhausen switching noise in ferroelectric PZT : critical exponents and temperature dependence
Abstract
Crackling noise of ferroelectric lead zirconate titanate samples during ferroelectric switching is demonstrated to be compatible with avalanche statistics. The peaks of the slew rate (time derivative of current dI/dt squared), defined as "jerks," were statistically analyzed and shown to obey power laws. The critical exponent obtained is 1.64 ± 0.15, in agreement with predictions from avalanche theory. The exponent is independent of temperature within experimental error margins.
Citation
Tan , C D , Flannigan , C , Gardner , J , Morrison , F D , Salje , E K H & Scott , J F 2019 , ' Electrical studies of Barkhausen switching noise in ferroelectric PZT : critical exponents and temperature dependence ' , Physical Review Materials , vol. 3 , no. 3 , 034402 . https://doi.org/10.1103/PhysRevMaterials.3.034402
Publication
Physical Review Materials
Status
Peer reviewed
ISSN
2475-9953Type
Journal article
Description
This work at St Andrews was supported by EPSRC grant EP/P024637/1. EKHS thanks EPSRC for support.Collections
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