| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1803053 | Journal of Magnetism and Magnetic Materials | 2008 | 4 Pages |
Abstract
Magnetic interactions in hexaferrite samples of Ba1-xLax+δFe12-xCoxO19Ba1-xLax+δFe12-xCoxO19 composition were studied. The precursor powders—barium carbonate (BaCO3)(BaCO3), lanthanum oxide (La2O3), hematite (Fe2O3) and cobalt acetate—were milled for 100 h in air atmosphere and heat-treated for 1 h at 1000∘C. The structural characterization was performed by X-ray diffraction. The FORC distributions show a single peak at high switching fields, indicating that the substituted systems are formed by weakly interacting particles. La excess induces the decoupling of the particles.
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Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
M.I. Oliva, P.G. Bercoff, H.R. Bertorello,