Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5491048 | Journal of Magnetism and Magnetic Materials | 2017 | 17 Pages |
Abstract
Cobalt ferrite CoxFe3âxO4 thin films with composition within the miscibility gap were grown using Dynamic Aurora pulsed laser deposition. X-ray diffraction patterns reveal as-grown phase separation to Fe-rich and Co-rich phases with no post-deposition annealing. The interconnected surface microstructure of thin film shows that this phase separation occurs through spinodal decomposition enhanced by magnetic-field-induced ion-impingement. The lattice parameter variation of the thin films with the magnetic field indicates that the composition fluctuations can be enhanced further by increasing the magnetic field. Results show that spinodal decomposition enhancement by magnetic-field-induced ion-impingement is independent of the lattice-mismatch-induced strain. This approach can promote spinodal decomposition in any thin film with no post-deposition annealing process.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Nipa Debnath, Takahiko Kawaguchi, Wataru Kumasaka, Harinarayan Das, Kazuo Shinozaki, Naonori Sakamoto, Hisao Suzuki, Naoki Wakiya,