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Author Liu, Xiaoming ♦ Tan, Xiaoli
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CERAMICS ♦ FATIGUE ♦ FERROELECTRIC MATERIALS ♦ PHASE TRANSFORMATIONS ♦ PIEZOELECTRICITY ♦ POINT DEFECTS ♦ POLARIZATION ♦ STABILITY ♦ TEMPERATURE RANGE 0273-0400 K ♦ X-RAY DIFFRACTION
Abstract The ceramic Pb{sub 0.99}Nb{sub 0.02}[(Zr{sub 0.57}Sn{sub 0.43}){sub 0.92}Ti{sub 0.08}]{sub 0.98}O{sub 3} can exist in either an antiferroelectric or a ferroelectric phase at room temperature, depending on the thermal and electrical history. The antiferroelectric phase can be partially recovered from the induced ferroelectric phase when the applied field reverses polarity. Therefore, polarization cycling of the ferroelectric phase in the ceramic under bipolar fields at room temperature is accompanied with repeated phase transitions. In this letter, the stability of the recovered antiferroelectric phase upon electrical cycling of the ceramic is investigated. Ex-situ X-ray diffraction reveals that bipolar cycling suppresses the antiferroelectric phase; this is indirectly supported by piezoelectric coefficient d{sub 33} measurements. It is speculated that the accumulated charged point defects during polarization cycling stabilize the polar ferroelectric phase. The findings presented are important to the fundamental studies of electric fatigue and field-induced phase transitions in ferroelectrics.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-08-17
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 7


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