Crystalline and Ferroelectric Properties of 0.68BiFeO3-0.32PbTiO3 Multiferroic Thin Film Prepared by Sol-Gel Method

0.68BiFeO
₃
-0.32PbTiO
₃
(BFPT) films were prepared on SiO
₂
/Si and Pt/Ti/SiO
₂
/Si substrates by sol-gel method. The XRD patterns of BFPT films show that BFPT films have good crystalline properties, and there are no other peaks of impure phases except for the peaks of BFPT thin film and the substrates. The thickness of BFPT thin films that annealed at 600? for 10 min was about 860 nm when deposited 8 layers. The clear interface is observed between BFPT film and the substrate. The remanent polarization of BFPT was rather high, and the Pr value was about 70muC/cm
²
.