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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Manzoor, Sadia
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Publications (5/5 displayed)
- 2022SURFACE MICROHARDNESS OF MICROHYBRID AND NANOCOMPOSITE AFTER STORAGE IN MOUTH WASHEScitations
- 2019Reversible electric-field-driven magnetization in a columnar nanocomposite filmcitations
- 2017Giant room temperature magnetoelectric response in strain controlled nanocompositescitations
- 2013Annealing control of magnetic anisotropy and phase separation in CoFe2O4-BaTiO3 nanocomposite filmscitations
- 2013Dependence of magnetoelectric properties on the magnetostrictive content in 0–3 compositescitations
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article
Annealing control of magnetic anisotropy and phase separation in CoFe2O4-BaTiO3 nanocomposite films
Abstract
Multiferroic heteroepitaxial nanocomposite films of BaTiO3 and CoFe2O4 (CFO) have been grown by pulsed laser deposition employing alternating ablation of two ceramic targets. Films grown at temperatures between 650 °C and 710 °C contain columnar CFO grains about 10–20 nm in diameter embedded in a BaTiO3 matrix. The very strong vertical compression of these grains causes large perpendicular magnetic anisotropy. Post-growth annealing treatments above the growth temperature gradually release the compression. This allows one to tune the stress-induced magnetic anisotropy. Additionally, annealing leads to substantial enhancement of the saturation magnetization MS. Since MS of a pure CFO film remains unchanged by a similar annealing procedure, MS is proposed to depend on the volume fraction of the obtained CFO phase. We suggest that MS can be utilized to monitor the degree of phase separation in nanocomposite films.