Size effects in the magnetic anisotropy of embedded cobalt nanoparticles: from shape to surface

Strong size-dependent variations of the magnetic anisotropy of embedded cobalt clusters are evidenced quantitatively by combining magnetic experiments and advanced data treatment. The obtained values are discussed in the frame of two theoretical models that demonstrate the decisive role of the shape in larger nanoparticles and the predominant role of the surface anisotropy in clusters below 3 nm diameter.

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Science des matériaux [cond-mat.mtrl-sci]

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oyarzun scirep15.pdf (491.39 Ko)

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https://hal.science/hal-02004517

Soumis le : vendredi 1 février 2019-17:59:37

Dernière modification le : vendredi 24 mars 2023-14:53:09

Dates et versions

hal-02004517 , version 1 (01-02-2019)

Identifiants

HAL Id : hal-02004517 , version 1
DOI : 10.1038/srep14749

Citer

Simón Oyarzún, Alexandre Tamion, Florent Tournus, Véronique Dupuis, Matthias Hillenkamp. Size effects in the magnetic anisotropy of embedded cobalt nanoparticles: from shape to surface. Scientific Reports, 2015, 5, pp.14749. ⟨10.1038/srep14749⟩. ⟨hal-02004517⟩

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