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Detailed Program
Paper Number : LP-P07
Time Frame : 12:00~13:30
Presentation Date : Friday, 28, November
Session Name : Leadfree Piezoelectrics
Session Chair 1# : -
Session Chair 2# : -
The structural and electrical properties of Cr doped BiFeO3-BaTiO3 lead free ceramics
Mr. Sangwook Kim
Changwon National University
Lead based piezoelectric bulk ceramics are used for various devices because of their excellent piezoelectric properties. Due to the toxic lead in lead-free piezoelectric, it is important to fine other lead-free piezoelectric metals for device applications. Recently, BiFeO3-BaTiO3 ceramics is consider as a replacement lead based piezoelectric metals, because BiFeO3-BaTiO3 has a high Curie temperature [1]. However, BiFeO3-BaTiO3 ceramics do not exhibit enough piezoelectric properties to replace for replacement lead based piezoelectric metals. In this study, Cr doped BiFeO3-BaTiO3 bulk ceramics were formed using a solid state reaction. The crystal structures were investigated using x-ray diffractometer and Rietveld analysis. The piezoelectric property was increased with comparing to pure BiFeO3-BaTiO3 ceramics. More detailed electrical and structural properties, including correlation between piezoelectric and structural properties, will be discussed in presentation.
Acknowledgements : This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education (2013R1A1A4A01010612) and by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIP) (2011-0030058)