Theoretical Aspects of Phase Transitions in Ferroelectric Thin Films -- Chemical Solution Deposition of Layered-Structured Ferroelectric Thin Films -- PB-Based Ferroelectric Thin Films Prepared by MOCVD -- Spontaneous Polarization and Crystal Orientation Control of MOCVD PZT and Bi4Ti3O12-Based Films -- Rhombohedral PZT Thin Films Prepared by Sputtering -- Scanning Nonlinear Dielectric Microsco…