Abstract
We present optical and dielectric quantum-confinement effects for mesocrystals smaller than 30 Å of BaTiO3 and SrBi2Ta2O9 in uniform mesopores of the MCM-41 molecular sieve. For BaTiO3 mesocrystals we observed a blueshift in optical absorption edge from 3.02 to 3.35 eV, and a decrease in dielectric constant maximum temperature from 130 to 55 °C. For SrBi2Ta2O9 mesocrystals we also observed an increase in the optical absorption edge from 2.70 to 4.18 eV, and a decrease in the dielectric constant maximum temperature from 320 to 180 °C. The observed optical and dielectric quantum-confinement effects generally agree with the recognized consequence of reduced size.
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.
