ABNORMAL PYROELECTRIC AND PIEZOELECTRIC HYSTERESIS LOOPS IN PZT THIN FILMS

O. N. SERGEEVA Department of Ferroelectrics and Piezoelectrics Physics, Tver State University, Sadovij per., 35, 170002, Tver, Russia

A. A. BOGOMOLOV Department of Ferroelectrics and Piezoelectrics Physics, Tver State University, Sadovij per., 35, 170002, Tver, Russia

S. V. SENKEVICH Ioffe Institute Politechnicheskaya, 26, S-Petersburg, 194021, Russia

E. YU. KAPTELOV Ioffe Institute Politechnicheskaya, 26, S-Petersburg, 194021, Russia

I. P. PRONIN Ioffe Institute Politechnicheskaya, 26, S-Petersburg, 194021, Russia

D. A. KISELEV University of Aveiro, 3810-193, Aveiro, Portugal

A. L. KHOLKIN University of Aveiro, 3810-193, Aveiro, Portugal

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ABSTRACT

In the work, “ex-situ” prepared PZT films were deposited on Pt/Ti/SiO₂/Si and Pt/Ti/pyroseram substrates by rf magnetron sputtering of PZT ceramic targets additionally containing excess lead oxide. An unusual “beak” shape of pyroelectric and piezoelectric hysteresis loops measured by “remanent hysteresis” regime were studied upon application of strong electric fields, temperature, and surface morphology of PZT films. The observed anomalies nature is discussed.

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ACKNOWLEDGMENTS

This study was supported by the Russian Foundation for Basic Research (project no. 08-02-01352), the Presidential Program of Support for the Leading Scientific Schools in Russia (project no. 2628.2008.2).

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ABNORMAL PYROELECTRIC AND PIEZOELECTRIC HYSTERESIS LOOPS IN PZT THIN FILMS

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ABNORMAL PYROELECTRIC AND PIEZOELECTRIC HYSTERESIS LOOPS IN PZT THIN FILMS

ABSTRACT

ACKNOWLEDGMENTS

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