Multiferroic properties of sol–gel-derived Bi4LaFe0.5Co0.5Ti3O15 thin films of four-layered perovskite
Source abstract
Abstract
Polycrystalline Bi4LaFe0.5Co0.5Ti3O15 (BLFCTO) thin films were prepared on (111)Pt/Ti/SiO2/Si via a sol–gel process. The films have a single-phase four-layered Aurivillius structure with space group Fmm2. As expected, the BLFCTO films present room-temperature multiferroic properties with a remanent polarization 2P r of ~42 μC cm−2 and a saturated magnetization M s of ~7.2 emu cm−3. More interestingly, both dielectric relaxation behavior and room-temperature magneto-dielectric effect were observed in the BLFCTO films, probably resulting from the charge ordering of Fe2+ and Fe3+. The magneto-dielectric coefficient of ~3.8% was obtained at room temperature under a low magnetic field of 0.5 T.
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Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Dielectric properties of ceramics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
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