Co-Fe-Al-O nanogranular thin films for magnetoelastic device applications in the GHz frequency range are fabricated by RF-magnetron sputtering under an Ar+O2 atmosphere. A very large resistivity up to 400μΩcm, a saturation magnetization (4πMS) of 16kG and an anisotropy field of 45Oe are consistently obtained, resulting in excellent high-frequency magnetic properties, such as a high ferromagnetic resonance frequency of 2.3GHz combined with a large real part of permeability of 315. A saturation magnetostriction of 45ppm is achieved at a magnetic field as low as 20Oe.
|Number of pages||3|
|Journal||Journal of Magnetism and Magnetic Materials|
|Publication status||Published - 2004 May|
|Event||Proceedings of the International Conference on Magnetism - Rome, Italy|
Duration: 2003 Jul 27 → 2003 Aug 1
Bibliographical noteFunding Information:
Financial support from the KIST Vision 21 program and the Research Center of Advanced Magnetic Materials at CNU is gratefully acknowledged.
Copyright 2008 Elsevier B.V., All rights reserved.
- Co-Fe-Al-O nanogranular film
- Ferromagnetic resonance frequency
- Magnetoelastic device
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics