DOMAIN-STRUCTURE OF EPITAXIAL PZT THIN-FILMS GROWN ON MGO(001) BY RF MAGNETRON SPUTTERING

Epitaxial Pb(ZrxTi1-x)O-3 (x=0.0 similar to 0.32) thin-films were succ essfully grown on MgO(001) single crystal by RF magnetron sputtering. Lattice constants and crystal quality of the films were measured by th e X-ray theta-2 theta scan and the FWHM of (001) rocking curves, respe ctively. Degree of c axis orientation and crystal quality of the films improved gradually with increasing Zr concentration. High temperature X-ray technique was employed to study the domain formation as a funct ion of temperature during cooling from cubic phase to tetragonal phase . The initial values of a at the Curie temperature also increased with increasing Zr concentration.