Tuning magnetization dynamic properties of Fe-SiO2 multilayers by oblique deposition

The static and dynamic magnetic properties of Fe-SiO2 multilayers fabricated onto Si(100) substrates by a radio frequency sputter-deposition system are investigated as functions of deposition angle and Fe thickness. By changing the oblique deposition angle, one can effectively tune the ferromagnetic resonance frequency from 1.7 to 3.5 GHz. In addition, the frequency linewidth is significantly changed with the oblique deposition angle when the Fe layer is thick, but it is almost constant in the case of small Fe thickness. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3143042]