This book presents topical research in the study of ferroelectrics. Topics discussed in this compilation include metal ferroelectric insulator semiconductor field effect transistors; resonant and non-resonant microwave absorption studies in multiferroic materials; the nanoscale ferroelectric behavior of Ge Sb Te films studied by piezoresponse force microscopy; composition design and electrical properties’ investigation of silver-containing perovskite lead-free piezoelectric ceramics; low temperature fabrication of high-k and ferroelectric thin films for capacitive applications and coplanar waveguide ferrolectric thin film microwave phase shifters.