Parallel ferromagnetic resonance and spin-wave excitation in exchange-biased NiFe/IrMn bilayers

Marcos Antonio De Sousa, Fernando Pelegrini, Willian Alayo, Justiniano Quispe-Marcatoma, Elisa Baggio-Saitovitch

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

15 Citas (Scopus)

Resumen

Ferromagnetic Resonance study of sputtered Ru(7 nm)/NiFe(t FM)/IrMn(6 nm)/Ru(5 nm) exchange-biased bilayers at X and Q-band microwave frequencies reveals the excitation of spin-wave and NiFe resonance modes. Angular variations of the in-plane resonance fields of spin-wave and NiFe resonance modes show the effect of the unidirectional anisotropy, which is about twice larger for the spin-wave mode due to spin pinning at the NiFe/IrMn interface. At Q-band frequency the angular variations of in-plane resonance fields also reveal the symmetry of a uniaxial anisotropy. A modified theoretical model which also includes the contribution of a rotatable anisotropy provides a good description of the experimental results.

Idioma originalInglés
Páginas (desde-hasta)167-172
Número de páginas6
PublicaciónPhysica B: Condensed Matter
Volumen450
DOI
EstadoPublicada - 1 oct. 2014

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