Torque magnetometry on thin magnetite films at low temperatures
| Autor: | M.K. Krause, Roland Höhne, C.A. Kleint, Alexey V. Pan, Michael Ziese, Pablo Esquinazi |
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| Rok vydání: | 2000 |
| Předmět: |
Materials science
Condensed matter physics Magnetometer Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Pulsed laser deposition Magnetic field Condensed Matter::Materials Science Magnetization chemistry.chemical_compound Magnetic anisotropy Nuclear magnetic resonance chemistry law Thin film Anisotropy Magnetite |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 211:271-277 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/s0304-8853(99)00746-5 |
| Popis: | Torque magnetometry was used to investigate the magnetic anisotropy of epitaxial Fe 3 O 4 films of thicknesses 420 and 40 nm grown by pulsed laser deposition on (0 0 1) MgO substrates. Torque measurements at 130 K in the (1 1 0) plane allow us to evaluate the influence of shape and stress anisotropy. As in bulk material field-cooled measurements performed at T =5 K show that the magnetic anisotropy is strongly influenced by the direction of the magnetic field applied above the Verwey temperature. In contrast to bulk magnetite we find smaller effective contributions of the magneto-crystalline anisotropy. In zero-field-cooled films our measurements suggest a tendency to a preferential out-of-plane orientation of the magnetic easy axis, but the dominating shape anisotropy favours an in-plane orientation of the magnetization. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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