Abstract
Epitaxial tin ferrite (SnFe2O4) thin films were grown using KrF excimer (248 nm) pulsed laser deposition technique under different growth conditions. Highly epitaxial thin films were obtained at growth temperature of 650 ˚C. The quality and epitaxial nature of the films were examined by X-ray diffraction technique. Furthermore, the phi scans of the film and substrate exhibit four folds symmetry which indicates a cube-on-cube epitaxial growth of the film on MgAl2O4 substrate. Moreover, the magnetic force microscopy measurement shows domains with cluster-like structure which is associated with ferromagnetic phase at room temperature. The coercive field and remnant magnetization of the films decrease with increase in temperature. These high quality ingenious magnetic films could be potentially used in data storage devices.
Highlights
Spinel ferrites with the general formula MFe2O4 attract considerable research interest because of their wide applications in heterogeneous catalyst, sensors, transformers, magnetic recording, biomedical, etc. (Abdeen, 1998; Sedlár et al, 2000; Bao et al, 2007; Barcena et al, 2008; Xiang et al, 2010)
We report the epitaxial growth of tin ferrite films on (001) MgAl2O4 substrate using pulsed laser deposition (PLD) technique
The epitaxial nature of the film is due to the close lattice parameters of film and substrate as both SnFe2O4 and MgAl2O4 exhibit cubic symmetry
Summary
Epitaxial thin films of various ferrites have been grown using different techniques (Zimnol et al, 1997; Reisinger et al, 2003; Huang et al, 2007; Leung et al, 2008; Su et al, 2010). Among these techniques, pulsed laser deposition (PLD) is a very versatile and cost effective method which allows the stoichiometry transfer of multi-component materials from target to substrate (Green et al, 1995)
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