Shandong Li et al 2008 J. Phys. D: Appl. Phys. 41 055004 doi:10.1088/0022-3727/41/5/055004
Shandong Li1,2,4, Zuanru Yuan3 and Jenq-Gong Duh2
Show affiliationsNanocrystalline FeCoZr films with gradient Zr composition were prepared by the gradient sputtering (GS) method at room temperature. A uniaxial magnetic anisotropy (UMA) with high Hk up to 305 Oe was achieved by controlling the composition gradient of doping element Zr. The origin of UMA can be attributed to the uniaxial stress, which results from the composition gradient. It is interesting to note that promising high-frequency ferromagnetic (FM) properties with resonance frequency of over 3 GHz were achieved in as-deposited GS films without magnetic annealing. This room-temperature fabrication process resolves a critical issue, i.e. to obtain a high resonance FM film material under a compatible technology between FM film preparation and monolithic integrated circuit techniques.
75.70.Ak Magnetic properties of monolayers and thin films
75.80.+q Magnetomechanical and magnetoelectric effects, magnetostriction
Condensed matter: electrical, magnetic and optical
Issue 5 (7 March 2008)
Received 21 October 2007, in final form 17 December 2007
Published 8 February 2008
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