Abstract
The effects of synthesis conditions on the structural evolution and multiferroic properties were investigated in Ca2Bi4Ti3.5Mn1.5O18 ceramics synthesized by molten salt methods. An optimized calcining temperature of 800 °C was found to be sufficient for obtaining the desired Aurivillius structure. The ceramics possess a morphotropic phase with the orthorhombic-tetragonal biphasic structure. The weight fractions and unit cell volumes of orthorhombic and tetragonal phases change with varying mass ratio of chlorides/oxides, which can effectively regulate the multiferroic properties at room temperature. The layered structure of several tens nanometers appears in all the Ca2Bi4Ti3.5Mn1.5O18 samples prepared with various chlorides/oxides mass ratios showing lossy ferroelectric behavior. The occurrence of magnetoelectric coupling effect is attributed to long-range magnetic order structure. The ceramic prepared with chlorides/oxides mass ratio equaling to 4 exhibits optimum properties with the highest remnant magnetization of ∼0.06 emu/g and the highest ME coefficient of ∼5.05 mV/(cm·Oe).
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.
