Book ChapterDOI
Electrical Response of Shock-Wave-Compressed Ferroelectrics
P. C. Lysne
- pp 202-209
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TLDR
The physical process involved is not the piezoelectric effect but rather the destruction of the remanent polarization by either a randomization of domains or by a polymorphic phase transformation to a nonferroelectric State as mentioned in this paper.Abstract:
Short duration electrical pulses with peak powers approaching a megawatt can be obtained by shock-wave compression of poled ferroelectric ceramics. The polarity of the electrical responses indicates that the physical process involved is not the piezoelectric effect but rather the destruction of the remanent polarization by either a randomization of domains or by a polymorphic phase transformation to a nonferroelectric State. Power supplies based on phase transformations are practical in that their electrical responses are relatively insensitive to the magnitude of the shock as long as the characteristic threshold conditions for the transformation are exceeded.read more
Citations
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Proceedings ArticleDOI
Dielectric Properties of PZT 95/5 during Shock Compression under High Electric Fields
TL;DR: In this article, the authors used different experimental configurations to better isolate the dielectric behavior of PZT 95/5 and showed that a simple relaxation model is inadequate for the case of both unshocked and shocked PZTs.
Proceedings ArticleDOI
Recent Progress in Understanding the Shock Response of Ferroelectric Ceramics
TL;DR: In this article, a more complex behavior was indicated over broader conditions, resulting in the incorporation of shock-induced conductivity and dielectric relaxation into analytical models, and the results are being actively utilized to develop and refine material response models used in numerical simulations of pulsed power devices.
ReportDOI
Effects of Microstructural Variables on the Shock Wave Response of PZT 95/5
TL;DR: In this article, a gas-gun facility was used to generate uniaxial-strain shock waves in PZT 95/5-2Nb materials under carefully controlled impact conditions.
Journal ArticleDOI
Shock-induced electrical conductivity in some ferroelectrics
TL;DR: In this article, the results of measurement of shock-induced electrical conductivity in ferroelectrics were given, including lead zirconate-titanate piezoceramic, deuterated triglycerine sulphate single crystal, and polymer polyvinylidene fluoride.
Recent Progress in Understanding the Shock Response of Ferroelectric Ceramics
TL;DR: In this paper, a more complex behavior was indicated over broader conditions, resulting in the incorporation of shock-induced conductivity and dielectric relaxation into analytical models, and the results are being actively utilized to develop and refine material response models used in numerical simulations of pulsed power devices.
References
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Journal ArticleDOI
Electric energy generation by shock compression of ferroelectric ceramics: Normal−mode response of PZT 95/5
P. C. Lysne,C. M. Percival +1 more
TL;DR: In this paper, impact-loading techniques are used to investigate the electromechanical response of poled specimens of a ferroelectric ceramic, PZT 95/5, to long−duration shock pulses.
Journal ArticleDOI
Current from a Shock‐Loaded Short‐Circuited Ferroelectric Ceramic Disk
TL;DR: In this paper, the authors investigated the effect of stress wavefront tilt on the shape of the current pulse and its time integral in a range of impact stresses ranging from a few to several tens of kilobars and concluded that this behavior results from the combined effects of stress on remanent polarization, polarizability, and conductivity of the material enveloped by the wave.
Journal ArticleDOI
Dielectric breakdown of shock‐loaded PZT 65/35
TL;DR: The dependence of dielectric breakdown in shockloaded ferroelectric ceramics on both the shock amplitude and the electric field strength was investigated by employing shock reverberation techniques as mentioned in this paper.
Journal ArticleDOI
Resistivity Estimates for Some Shocked Ferroelectrics
TL;DR: In this article, a quantitative analysis of short-circuit current waveshapes from typical ferroelectric materials is made on the basis of a previously developed model that has been extended to include the effect of conduction.