Title :
Spin wave resonance in FeAlN films
Author :
Rook, K. ; Artman, J.O.
Author_Institution :
Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
11/1/1991 12:00:00 AM
Abstract :
Results are presented on the 33-GHz ferromagnetic resonance and spin wave resonance spectra of single and multilayer NiFe/FeAlN films deposited by RF diode sputtering. The following films were prepared: FeAlN/glass, NiFe/glass, NiFe/FeAlN/glass and NiFe/FeAlN/NiFe/glass. For all the FeAlN films a spectrum of volume spin waves is observed. The exchange constant A calculated from the spin wave resonance spectrum is between 1.6 and 1.8×10-6 erg cm-1. The effective anisotropy field 4πMs and g-values are -17.7 kOe, 18.1 kG, 2.19 and -9.1 kOe, 9.4 kG, 2.14 for the FeAlN and the NiFe, respectively. In the bilayer and the trilayer films, an extra resonance is observed which lies at a field value in between the NiFe and FeAlN resonances for the in-plane applied field. This resonance is attributed to a surface spin wave mode
Keywords :
aluminium compounds; exchange interactions (electron); ferromagnetic properties of substances; ferromagnetic resonance; iron alloys; iron compounds; magnetic anisotropy; magnetic thin films; nickel alloys; spin waves; sputtered coatings; FeAlN films; NiFe-FeAlN; RF diode sputtering; bilayer films; effective anisotropy; exchange constant; ferromagnetic resonance; g-values; glass substrate; spin wave resonance spectra; surface spin wave mode; trilayer films; volume spin waves; Anisotropic magnetoresistance; Glass; Magnetic field measurement; Magnetic films; Magnetic multilayers; Magnetic properties; Magnetic resonance; Magnetostriction; Saturation magnetization; Sputtering;
Journal_Title :
Magnetics, IEEE Transactions on
