Abstract
Nanophase ferroelectric PbTiO/sub 3/ (PT) fine powders are prepared through sol-gel and hydrolysis-aging processes. The lattice constants and grain size are determined by XRD, (X-ray diffraction) analysis. The phase transition is examined by DSC (differential scanning calorimetry) analysis with different heating rates. The relation of onset temperature to grain size is obtained. Results indicate that the grain size is in the range of 10-100 nm, that the phase transition temperature is lower than that of bulk material, and that the transition region is broadened. The distribution of particle size may be responsible for the broadening of the phase transition. The phase transition of PT fine powders is compared with the diffused phase transition in relaxor ferroelectrics. The nm structure, nm transition, and critical size of fine powders are discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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.
