Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1793133 | Journal of Crystal Growth | 2010 | 7 Pages |
Abstract
The structural and magnetic properties of Co68Fe24Zr8/Al2O3 multilayers grown by using magnetron sputtering were investigated with X-ray reflectivity, transmission electron microscopy and magneto-optical Kerr effect. The Co68Fe24Zr8 form amorphous islands when the nominal thickness of the Co68Fe24Zr8 layers is 10Â Ã
, exhibiting an isotropic superparamagnetic behavior. Continuous layers with mostly a nano-crystalline structure are instead formed when the nominal thickness of the Co68Fe24Zr8 layers is increased to 20Â Ã
. The continuous layers exhibit random, in-plane, magnetic anisotropy resulting from the growth process. However, induced uniaxial anisotropy is obtained when growing the sample in the presence of an applied magnetic field, regardless of the combination of amorphous and nano-crystalline material.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Hans Lidbaum, Hossein Raanaei, Evangelos Th. Papaioannou, Klaus Leifer, Björgvin Hjörvarsson,