Fig. 9. (Color online) (a) Schematic illustrating the synthesis of sulfurized Pb(Zr,Ti)O
3 (PZT) films. (b) Polarization–electric field hysteresis loops of pure and sulfurized PZT films on SrRuO
3/SrTiO
3 (001) substrate. (c) The band-gap measurement of pure and sulfurized PZT films on SrRuO
3/SrTiO
3 (001) substrates using ellipsometry. Here, (
Eα)
2, where
E and
α are the photon energy and the absorption coefficient, respectively, was plotted as a function of the photon energy (eV). Adapted with permission from Ref. [
71]. Copyright 2019 American Physical Society.
