[22p-A311-1~10] 9.1 Dielectrics, ferroelectrics

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[22p-A311-6] Tuning physical properties of ferroelectric BaTiO₃ by biaxial strain

〇Hikaru Azuma¹, Seiya Shimoi¹, Takahiro Tsuzuki¹, Ryo Kobayashi¹, Masayuki Uranagase¹, Genki Deguchi¹, Akito Morimoto¹, Shuji Ogata¹ (1.Nagoya Inst. Tech.)

Keywords:

ferroelectrics,molecular dynamics,barium titanate

BaTiO₃ is a ferroelectric material used in energy conversion devices such as actuators and capacitors. Although BaTiO₃ has the advantage of not containing harmful lead, its piezoelectric and temperature property is inferior to these of the widely used Pb(Zr_xTi_1-x)O₃. In order to expand the range of applications of BaTiO₃, it is desirable to develop a technology to improve the Curie temperature and piezoelectric properties from their original values. In this study, a technique to add biaxial strain (a- and b-axis strain of tetragonal crystal) to improve these properties was investigated by molecular dynamics simulation.