Comparison of room-temperature multiferroics in Bi4Fe2TiO12 film and bulk
J. Lu, L.J. Qiao, W.Y. Chu
TL;DR
This study compares room-temperature multiferroic properties of Bi4Fe2TiO12 in film and bulk forms, showing significant improvements in the film due to oxygen vacancies and interfaces, with potential for device applications.
Contribution
It provides a comparative analysis of multiferroic properties in Bi4Fe2TiO12 film and bulk, highlighting the role of oxygen vacancies and interfaces in enhancing performance.
Findings
Enhanced dielectric and magnetic properties in film
Oxygen vacancies linked to improved multiferroicity
Potential for multifunctional device integration
Abstract
It is reported that both dielectricity and magnetism at room temperature have been appreciably improved in Bi4Fe2TiO12 film compared with that of Bi4Fe2TiO12 bulk. X-ray diffraction profiles reveal similar crystalline nature and random orientation of the two but X-ray photoelectron spectroscopy (XPS) experiments indicate 1.4 eV lower binding energy of core-state O 1s in film relative to those of bulk, so the improvement of multiferroics in film are attributed to the oxygen vacancies and high fraction of interface. The results have promising applications in multifunctional integrated devices.
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Taxonomy
TopicsMultiferroics and related materials