Search

Multiferroic nanocomposite thin film containing single phase multiferroic BiFeO3 (BFO) and ferrimagnetic CoFe2O4 (CFO) have successfully fabricated utilizing two distinct thin film architectures. Namely, the multilayer and vertically aligned nanocomposite architectures, which is, have a different role to the magnetic coupling mechanism. A magnetic saturation enhancement occurs in the BFO-CFO vertically aligned nanocomposite due to a strong magnetic coupling between pillars and matrix manifested in vertically aligned nanocomposite architecture. [ABSTRACT FROM AUTHOR]

Multiferroic nanocomposite is recognized as one class of multiferroic with high magnetoelectric coefficient offered by their excellent magnetic-electric coupling via strain interaction. The strain interaction or structural coupling in this system is very important, which is, it can be tuned further by modifying the nanocomposite architectures. Here, we conduct a comparative study of the multiferroic nanocomposite BiFeO3 (BFO)-CoFe2O4 (CFO)/SrTiO3 (STO) with various vertically aligned nanocomposite architectures. It appears that both of BFO and CFO phases can be formed as a matrix and/or a pillars or vice versa depending on the crystalline orientation of STO substrate. The formation of matrix- pillars are strongly influenced by surface energy anisotropy between constituent BFO and CFO phases. [ABSTRACT FROM AUTHOR]