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

  title={Electrical studies of Barkhausen switching noise in ferroelectric lead zirconate titanate (PZT) and BaTiO3: Critical exponents and temperature-dependence.},
  author={Callum Flannigan and Chao Dun Tan and James F Scott},
  journal={Journal of physics. Condensed matter : an Institute of Physics journal},
  • Callum Flannigan, Chao Dun Tan, James F Scott
  • Published 31 May 2019
  • Medicine, Materials Science, Physics
  • Journal of physics. Condensed matter : an Institute of Physics journal
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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