PREPARATION OF PB-BASED FERROELECTRIC THIN-FILMS AT ROOM-TEMPERATURE USING EXCIMER-LASER-ASSISTED MULTI-ION-BEAM SPUTTERING

Pb-based ferroelectric thin films of PbTiO3, (Pb, La)TiO3 and Pb(Zr, T i)O-3 were fabricated on Pt/MgO and Pt/Ti/SiO2/Si substrates using an excimer-laser-assisted multi-ion-beam sputtering technique. During the deposition at room temperature, the surface of the films was irradiat ed with XeCl excimer laser pulses in order to promote surface reaction s. X-ray diffraction and in situ reflection high-energy electron diffr action measurements demonstrated that the films with perovskite struct ure were epitaxially grown with preferential a-axis orientation. The p repared PZT films exhibited the dielectric constant of 248 and ferroel ectric P-E hysteresis loops.