@article{33950, keywords = {thin films, ablation, superconducting films, scanning electron microscopy, pulsed laser ablation, crystal growth, Ferroelectric materials, High temperature superconductors, Interfaces (materials), Laser pulses, Crystal microstructure, X ray spectroscopy, Lead titanate thin films, Thermal expansion mismatch}, author = {S.G Ghonge and E Goo and Ramamoorthy Ramesh}, title = {Microstructure of c-axis oriented lead titanate thin films by pulsed laser ablation}, abstract = {Epitaxial ferroelectric PbTiO3/YBa2Cu 3O7-x heterostructures have been fabricated on [001] LaAlO3 by pulsed laser ablation. X-ray diffractometer scans showed only the (00l) peaks from the lead titanate and YBa2Cu 3O7-x film indicating c-axis growth. Transmission electron microscopy on planar and cross-sectional samples revealed a single domain film. The c-axis orientation in the lead titanate film is ascribed to the good lattice match of the a-axis of lead titanate with the a- or b-axes of the YBa2Cu3O7-x film. A cubic lead titanate film is deposited above the Curie point. Compressive stresses arise in the lead titanate film due to lattice mismatch. The c-axis orientation is favored since it reduces the compressive residual stresses.}, year = {1993}, journal = {Applied Physics Letters}, volume = {62}, number = {15}, pages = {1742-1744}, issn = {00036951}, doi = {10.1063/1.109592}, note = {cited By 23}, language = {eng}, }