PZT 52/48 Ferroelectric Ceramics: Depolarization and Electric Breakdown under Longitudinal Explosive Shock
Electric breakdown within longitudinally explosively shockedPb(Zr₀.₅₂Ti₀.₄₈)O₃ (PZT 52/48) ferroelectric ceramics was investigated. It was experimentally demonstrated that electric breakdown causes significant energy losses in miniature autonomous generators based on shock depolarization of poled ferroelectric elements. We found that a dependence of breakdown field strength, E[subscript g], of shocked ferroelectric, on the thickness of the element, d, is described by the E[subscript g](d) = γ·d[superscript -w] law which describes breakdown measurements for a variety of dielectric materials at ambient conditions. The analysis of experimental results showed that the tunnel effect is a dominant mechanism of injection of prime electrons in the shocked ferroelectrics. © 2011 IEEE.
S. I. Shkuratov et al., "PZT 52/48 Ferroelectric Ceramics: Depolarization and Electric Breakdown under Longitudinal Explosive Shock," Digest of Technical Papers-IEEE International Pulsed Power Conference, Institute of Electrical and Electronics Engineers (IEEE), Jan 2011.
The definitive version is available at http://dx.doi.org/10.1109/PPC.2011.6191460
18th IEEE International Pulsed Power Conference, PPC 2011
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