Piezo-ferroelectrics: Pressure-induced phase transitions in Pb(Zr1-xTix)O3 (PZT)

Details Piezo-ferroelectrics: Pressure-induced phase transitions in Pb(Zr1-xTix)O3 (PZT) Piezo-ferroelectrics: Pressure-induced phase transitions in Pb(Zr1-xTix)O3 (PZT)

2007-11-07

arxiv.org/abs/0711.1096v1

Pressure-induced phase transitions, Andrzej grzechnik (Ed.) (2007) 61-74

Physics

Condensed Matter

Materials Science

Scientific paper

Piezoelectric PZT solid solutions were studied as a function of pressure and temperature. Moderate pressure is found to induce phase transitions to monoclinic phases (Cm,Cc) for Ti-rich PZT, which are the same ferroelectric phases responsible for the high piezoelectric properties of the MPB. The following transformation sequence P4mm -> Cm -> Cc -> F1 -> F-1 was identified upon increasing pressure. Compression behaviour is dominated by: (1) a rotation and a reduction of the spontaneouspolarization and (2) octahedral tilting leading to unit cell doubling. Future studies as a function of pressure, temperature and electric field on single crystals of heterovalent relaxor ferroelectric isotypes of PZT are proposed in order to better understand these potentially technologically-important piezoferroelectric materials.

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