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Title

Reconfigurable exchange bias-like effect in hybrid hard/soft patterned magnetic composites

AuthorsHierro-Rodríguez, A. ; Teixeira, J. M.; Rodríguez-Rodríguez, G. ; Rubio, Honorino ; Vélez, María ; Álvarez-Prado, L. M. ; Martín, José Ignacio ; Alameda, J. M.
Issue Date2016
Citation8th Joint European Magnetic Symposia (2016)
AbstractReconfigurable magnetic systems are attracting growing interest due to their potential in the development of forefront magnetic devices. One way to dreate the reconfigurability is by applying external fields and/or changing the magnetic history of the system, controlling in this way, the dynamic and/or static magnetic behavior without changing the shapes/sizes of the structures. Here we present a hybrif 2D hard-soft composite fabricated by combining soft (Co73Si27) and hard (NdCo5) magnetic materials with in-plane and out-of-plane magnetic anisotropies, respectively. They have been microstructured in a square lattice of CoSi anti-dots with NdCo dots within the holes. The magnetic properties of the dots allow us to introduce a magnetostatic interactions between dot and anti-dot layers induce a completely reconfigurable exchange bias-like shift in the system's hysteresis loops. Two different regimes for this shift are present depending on the lattice parameter of the microstructures. For large values, dipolar magnetostatic decay is observed with a small bias field shift. For the smaller lattice parameter, the interaction between adjacent anti-dot's characteristic closure domain structures enhances the exchange bias-like effect.
DescriptionResumen del trabajo presentado al Joint European Magnetic Symposia (JEMS), celebrado en Glasgow (UK) del 21 al 26 de agosto de 2016.
URIhttp://hdl.handle.net/10261/173679
Appears in Collections:(CINN) Comunicaciones congresos
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