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Static and high frequency magnetic properties of FeGa thin films deposited on convex flexible substrates.
- Source :
-
Applied Physics Letters . 4/20/2015, Vol. 106 Issue 16, p1-4. 4p. 3 Graphs. - Publication Year :
- 2015
-
Abstract
- Magnetostrictive FeGa thin films were deposited on the bowed flexible polyethylene terephthalate (PET) substrates, which were fixed on the convex mold. A compressive stress was induced in FeGa films when the PET substrates were shaped from convex to flat. Due to the effect of magnetostriction, FeGa films exhibit an obvious in-plane uniaxial magnetic anisotropy which could be enhanced by increasing the applied pre-strains on the substrates during growth. Consequently, the ferromagnetic resonance frequency of the films was significantly increased, but the corresponding initial permeability was decreased. Moreover, the films with pre-strains less than 0.78% exhibit a working bandwidth of microwave absorption about 2GHz. Our investigations demonstrated a convenient method via the prestrained substrates to tune the high frequency properties of magnetic thin films which could be applied in flexible microwave devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 106
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 102321599
- Full Text :
- https://doi.org/10.1063/1.4918964