Abstract
BaTiO3 (BT) powder was coated with SiO2 using Stöver method. Then BT films were prepared on Au/stainless steel substrates by pulsed electrophoretic deposition using this SiO2/BT powder aqueous suspension. The resulting BT films were sintered using a semiconductor laser (450 nm wavelength, 3.2 × 104 W/cm2 maximum power, 100 μm spot diameter). The BT film was sintered with 12% laser power, but not sintered when the laser power less than 11%. The BT crystalline phase did not change during sintering. Sintering and peeling off of the film were observed when the laser power was greater than 13%. By laser sintering, the BT film thickness decreased to 49%. The dielectric constants of the electrophoretic deposited film and laser sintered film at the Curie temperature were, respectively, 730 and 2340. The electrodeposited film had a coercive field of 80.35 kV/cm, with remanent polarization of 0.032 μC/cm2. The laser-sintered film had a coercive field of 71.3 kV/cm and remanent polarization of 9.51 μC/cm2. Laser irradiation promoted sintering of the BT film, and thereby drastically improved the BT film dielectric and ferroelectric properties.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
