Use of the Thermal Square Wave Method to Analyze Polarization State in Ferroelectric Materials

Abstract

Abstract Thermal Square Wave Method at single-frequency (TSWM) for the determination of the pyroelectric coefficient distribution and the polarization profile of ferroelectric materials is described. Mathematical analysis of the TSWM is presented alongside with the experimental setup description and data. Good correlation between the calculated and experimental results is demonstrated. Compared to LIMM the TSWM simplifies the mathematical analysis and is applicable to both bulk and film samples. Keywords: Ferroelectricspyroelectric effectpolarization distribution Acknowledgments The authors are grateful to Prof. H. Beige, Dr. R. Steinhausen and Dr. H.T. Langhammer (Martin-Luther-University Halle-Wittenberg, Germany) for the graded BTS piezoceramic samples and to Prof. I.P. Raevski (Southern Rostov-on-Don Federal University, Russia) for the Sn2P2S6 films given for the research. This work was performed within the Federal Target Program “Research and Research-Pedagogical Personnel of Innovation Russia for 2009–2013” and supported by the Russian Foundation for Basic Research, project no. 08-02-97502-r_centre_a and Grants RNP 2.2.2.3.8101 of the Ministry of Education and Science of the Russian Federation.