[18a-Z20-1~8] 6.1 Ferroelectric thin films

[18a-Z20-6] Permittivity for Depolarization Field of Ferroelectric and Hidden Mechanisms: Ab initio Calculations

〇Yukio Watanabe¹ (1.Kyushu Univ.)

Keywords:permittivity, depolarization field, stability

Electrostatics of depolarization field E_d in relation to the polarization is studied. By using spontaneous polarization P_S corresponding to accurate experiment ones, we show ε_d = 1, which suggests that the results of ε_d >> 1 indicate hidden mechanisms.
Y. Watanabe, Examination of permittivity for depolarization field of ferroelectric by ab initio calculation, suggesting hidden mechanisms, Scientific Reports (in press, 2021)