The depolarization of Pb(Zr0.52Ti0.48)O3 ferroelectrics by cylindrical radially expanding shock waves and its utilization for miniature pulsed power

Abstract

The effects of depolarization of Pb(Zr(0.52)Ti(0.48))O(3) (PZT 52∕48) poled ferroelectrics by cylindrical radially expanding shock waves propagated along and across the polarization vector P(0) were experimentally detected. Miniature (total volume 100 cm(3)) autonomous generators based on these effects were capable of producing output voltage pulses with amplitudes up to 25 kV and output energies exceeding 1 J.

Pressure‐driven phase transition and energy conversion in ferroelectrics: Principles, materials, and applications

“…However, shock-wave compression perpendicular to the polarization direction induces structural changes and polarization reorientation, leading to complete depolarization. 40,104 The electrical pulses generated by shock-wave compression have several common indicators, including power density (ranging from kilowatts to terawatts), stored energy (ranging from joules to megajoules), and pulse shape (i.e., rise time, pulse width, fall or decay time, and flatness of the top of the pulse). Among them, the pulse shape is crucial because the input requires a certain pulse shape for proper operation, such as a square wave with well flatness.…”

“…When the shock‐wave compression is parallel to the polarization direction, the compressive pressure produces an anti‐/parallel electric field via the inverse piezoelectric effect, which affects the depolarization process. However, shock‐wave compression perpendicular to the polarization direction induces structural changes and polarization reorientation, leading to complete depolarization 40,104 . The electrical pulses generated by shock‐wave compression have several common indicators, including power density (ranging from kilowatts to terawatts), stored energy (ranging from joules to megajoules), and pulse shape (i.e., rise time, pulse width, fall or decay time, and flatness of the top of the pulse).…”

The Charge Release and Its Mechanism for Pb(In1/2Nb1/2)–Pb(Mg1/3Nb2/3)–PbTiO3 Ferroelectric Crystals Under One‐Dimensional Shock Wave Compression

“…Since Neilson reported the rapid depolarization of ferroelectric ceramics induced by shock waves compression in 1957, numerous investigations on the ferroelectric materials under shock wave compression have been reported. Due to the application of explosively driven pulsed power supply, the research in this field mainly focused on the ferroelectric–antiferroelectric (FE‐AFE) phase transition induced by shock compression .…”

“…[4][5][6][7] The ferroelectric ceramics with composition close to the FE/AFE phase boundary, such as (PbZr 0.95 Ti 0.05 O 3 ) PZT95/5, present a small free energy difference between FE and AFE phases, and the FE-AFE phase transition could be easily induced by pressure. Beyond that, few investigations of shock wave compression were performed on the typical ferroelectric materials, such as BaTiO 3 and PbZr 0.52 Ti 0.48 O 3 , [8][9][10] in which multiple phase transitions and complex charge release mechanism were required to be studied.…”

“…[11][12][13] However, the response of these materials under dynamic high pressure is still unkown. 13 And it is required to be answered whether relaxor-based ferroelectrics have advantage compared with conventional materials such as quartz 3 and PZT 9 in the shock wave piezoelectric detector or explosively driven pulsed power supply application.…”