# Electrical Studies of Barkhausen Switching Noise in Ferroelectric lead zirconate titanate (PZT) and BaTiO3: Critical Exponents and Temperature-dependence

## TL;DR

This study investigates Barkhausen noise in ferroelectric materials PZT and BaTiO3, focusing on critical exponents and temperature effects, revealing new temperature-dependent behaviors and critical exponents in these materials.

## Contribution

It provides the first measurement of the Omori exponent in PZT and extends temperature-dependent studies of Barkhausen noise in BaTiO3.

## Key findings

- Omori exponent in PZT: -0.95±0.03
- Temperature dependence of Barkhausen noise in BaTiO3
- Agreement with avalanche models in energy spectrum

## Abstract

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$\pm$0.03) for aftershocks in PZT and extend the barium titanate studies to a wider range of temperature.