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 | |
【 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.
【 授权许可】
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