Complete stress-induced depolarization of relaxor ferroelectric crystals without transition through a non-polar phase

Shkuratov, Sergey I.; Baird, Jason; Antipov, Vladimir G.; Hackenberger, Wesley S.; Luo, Jun; Zhang, Shujun; Lynch, Christopher S.; Chase, Jay B.; Jo, Hwan R.; Roberts, C. A.

doi:10.1063/1.5019593

Cited by 33 publications

(21 citation statements)

References 28 publications

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“…Conventionally, the piezoelectric powder can be poled by a DC high voltage in a silicone oil bath after being compressed into pellets and finally mechanically smashing the pellets back into powders 43 . However, the remnant polarization of piezoelectric powders may be attenuated due to the multi-domain formation associated with residual stress release 44,45 . Consequently, we employed a corona-poling method to directly pole the asprepared BTO nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Piezo-catalysis for nondestructive tooth whitening

et al. 2020

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The increasing demand for a whiter smile has resulted in an increased popularity for tooth whitening procedures. The most classic hydrogen peroxide-based whitening agents are effective, but can lead to enamel demineralization, gingival irritation, or cytotoxicity. Furthermore, these techniques are excessively time-consuming. Here, we report a nondestructive, harmless and convenient tooth whitening strategy based on a piezo-catalysis effect realized by replacement of abrasives traditionally used in toothpaste with piezoelectric particles. Degradation of organic dyes via piezo-catalysis of BaTiO 3 (BTO) nanoparticles was performed under ultrasonic vibration to simulate daily tooth brushing. Teeth stained with black tea, blueberry juice, wine or a combination thereof can be notably whitened by the poled BTO turbid liquid after vibration for 3 h. A similar treatment using unpoled or cubic BTO show negligible tooth whitening effect. Furthermore, the BTO nanoparticle-based piezocatalysis tooth whitening procedure exhibits remarkably less damage to both enamel and biological cells.

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Section: Resultsmentioning

confidence: 99%

Piezo-catalysis for nondestructive tooth whitening

et al. 2020

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“…Pulsed power engineering applications require an evaluation of the depolarization behaviors when subjected to pressures. Hydrostatic pressure is a common method used to evaluate this response behavior . In this study, the in situ depolarization behavior of poled PZ‐ x BMN samples under hydrostatic pressures was determined, and the results are shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…A PIN‐PMN‐PT single crystal was reported to have an increased released energy density . Depolarization behaviors induced by hydrostatic pressure or shock compression has also been reported in BNT‐based ceramics, which are promising lead‐free candidates for pulsed power applications . Recently, the present group reported 0.97PbZrO 3 ‐0.03Ba(Mg 1/3 Nb 2/3 )O 3 ceramics as potential candidates for pulsed power applications due to their depolarization performances under hydrostatic pressure .…”

Section: Introductionmentioning

confidence: 81%

“…A broadband dielectric/impedance spectrometer (Model Concept‐40; Novocontrol Technologies, Montabaur, Germany) was employed to measure the dielectric behavior at 1 kHz from −120 to 120°C. The aixACCT TF Analyzer 2000 was used in combination with a homemade hydrostatic pressure loading setup to measure the depolarization behaviors and ferroelectric hysteresis loops under hydrostatic pressures up to 450 MPa . For hydrostatic pressure loading, the sample is positioned in a closed chamber and filled with benzyltoluene as the pressure‐transporting medium.…”

Section: Methodsmentioning

confidence: 99%

“…The second mechanism is the phase transition‐induced depolarization that occurs from a polar‐to‐nonpolar phase transition, which usually results in complete depolarization; this phenomenon has been reported in Pb(Zr 0.95 Ti 0.05 )O 3 (PZT95/5) FE ceramics and in (Bi 0.5 Na 0.5 )TiO 3 (BNT) ‐based lead‐free ceramics . In addition, another new mechanism of complete stress‐induced depolarization of Pb(In 1/2 Nb 1/2 )O 3 ‐Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbTiO 3 (PIN‐PMN‐PT) relaxor single crystals has been recently reported that does not include a transition to a nonpolar phase …”

Section: Introductionmentioning

confidence: 95%

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Pressure‐induced phase transitions in PZ‐xBMN binary solid solutions

Nie

Peng

et al. 2019

J Am Ceram Soc

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Solid solutions of (1−x)PbZrO 3 -xBa(Mg 1/3 Nb 2/3 )O 3 (PZ-xBMN, x = 0.02, 0.03, 0.04, and 0.05) were prepared, and their microstructures, electrical properties, and phase transition behaviors under hydrostatic pressure were investigated. It was found that the incorporation of BMN into PZ can provide improved ferroelectric properties, leading to the formation of antiferroelectric/ferroelectric phase boundaries in PZ-xBMN ceramics when the value of x is between 0.02 and 0.03. It was also demonstrated that the ferroelectric phases exhibit excellent temperature stability in the remanent polarization. Importantly, complete depolarization was observed in the PZ-xBMN solid solution due to the hydrostatic pressure-induced ferroelectric-antiferroelectric phase transition. The resultant properties and phase transition behaviors of PZ-xBMN ceramics under pressure will benefit their application in pulsed power supplies.

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