Title :
Spin dynamics in interdiffused NiFe/Mn exchange biased bilayers
Author :
Ben Youssef, J. ; Spenato, D. ; Le Gall, H.
Author_Institution :
Lab. de Magnetime de Bretagne, CNRS/UMR, Brest, France
Abstract :
Summary form only given. Irreversible measurements (such as M-H curve) are commonly used to quantify the unidirectional exchange coupling in F/AF bilayers. Reversible experimental techniques, such as ferromagnetic resonance and ac susceptibility are also employed but lead to different values for the exchange field. We have shown recently that a strong exchange field strength may be induced in NiFe/Mn bilayers after annealing. In order to study the effect of interdiffusion due to heat treatment, the exchange anisotropy field has been investigated in NiFe/Mn bilayers with different NiFe thicknesses from FMR and complex permeability spectra performed under and without external magnetic field.
Keywords :
annealing; chemical interdiffusion; exchange interactions (electron); ferromagnetic materials; ferromagnetic resonance; iron alloys; magnetic anisotropy; magnetic multilayers; magnetic permeability; manganese; nickel alloys; spin dynamics; F/AF bilayers; FMR; M-H curve; NiFe thickness; NiFe-Mn; annealing; complex permeability spectra; exchange anisotropy field; exchange field strength; external magnetic field effects; ferromagnetic resonance; interdiffused NiFe/Mn exchange biased bilayers; spin dynamics; unidirectional exchange coupling; Annealing; Antiferromagnetic materials; Damping; Frequency measurement; Magnetic field measurement; Magnetic resonance; Magnetic resonance imaging; Magnetization; Permeability measurement; Temperature;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001207
