期刊论文详细信息
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 卷:381
Micromagnetic simulation of exchange coupled ferri-/ferromagnetic heterostructures
Article
Oezelt, Harald1  Kovacs, Alexander1  Reichel, Franz1  Fischbacher, Johann1  Bance, Simon1  Gusenbauer, Markus4  Schubert, Christian2,3  Albrecht, Manfred2,3  Schrefl, Thomas1,4 
[1] St Polten Univ Appl Sci, A-3100 St Polten, Austria
[2] Tech Univ Chemnitz, Inst Phys, D-09126 Chemnitz, Germany
[3] Univ Augsburg, Inst Phys, D-86159 Augsburg, Germany
[4] Danube Univ Krems, Ctr Integrated Sensor Syst, A-2700 Wiener Neustadt, Austria
关键词: Exchange-coupled composite media;    Micromagnetic simulations;    Ferrimagnet;    FEM;    Domain wall motion;    Finite size effect;    Pinning;   
DOI  :  10.1016/j.jmmm.2014.12.045
来源: Elsevier
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【 摘 要 】

Exchange coupled ferri-/ferromagnetic heterostructures are a possible material composition for future magnetic storage and sensor applications. In order to understand the driving mechanisms in the demagnetization process, we perform micromagnetic simulations by employing the Landau-Lifshitz-Gilbert equation. The magnetization reversal is dominated by pinning events within the amorphous fern-magnetic layer and at the interface between the ferrimagnetic and the ferromagnetic layer. The shape of the computed magnetization reversal loop corresponds well with experimental data, if a spatial variation of the exchange coupling across the ferri-/ferromagnetic interface is assumed. (C) 2014 The Authors. Published by Elsevier B.V.

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