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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2010

Induced anisotropies in a ferromagnet coupled to a polycrystalline antiferromagnet

Résumé

The effect of thermal activation of a polycrystalline antiferromagnet (AF) coupled to a ferromagnet (FM) on the unidirectional anisotropy responsible for positive shift of the resonant frequency (fR) of the FM is presented. Hysteresis loops and ferromagnetic resonance plots of Co35Fe65/Ni50Mn50 are evaluated and matched with those obtained from experiments. The contribution of the AF magnetic structure to fR is highlighted. An inverse relation between fR and AF grain size is predicted.

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Electronique
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Dates et versions

hal-00656953 , version 1 (05-01-2012)

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Jyotirmoy Saha, Kevin Garello, Bernard Viala, Alain Marty, Nicolas Vukadinovic. Induced anisotropies in a ferromagnet coupled to a polycrystalline antiferromagnet. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2010, 81 (21), Article n° 024417 - 5 p. ⟨10.1103/PhysRevB.81.024417⟩. ⟨hal-00656953⟩
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