Abstract
Nanocrystalline FeCoHf films with Hf composition gradient were prepared by gradient sputtering method at room temperature. A uniaxial magnetic anisotropy with high anisotropy field Hk up to 547 Oe was achieved after magnetic annealing with external field along the gradient direction. Ultrahigh ferromagnetic resonance frequency over 7 GHz was obtained in magnetic annealed gradient sputtered films. The origin of ultrahigh ferromagnetic properties in gradient sputtered films is discussed.
Original language | English |
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Article number | 092501 |
Journal | Applied Physics Letters |
Volume | 92 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2008 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)