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Substrate-Deposition-Teiimperatijre Dependence of Perpendicular Magnetic Anisotropy in (Fe/Pt) Compositionally-Modulated Films

Published online by Cambridge University Press:  15 February 2011

S. Iwata ,
S. S. P. Parkin ,
H. Nuri  and
T. Suzuki
S. Iwata
Affiliation:
IBM Rcsearch Division, Almaden Research Center 650 Harry Road, San Jose, CA 95120–6099
S. S. P. Parkin
Affiliation:
IBM Rcsearch Division, Almaden Research Center 650 Harry Road, San Jose, CA 95120–6099
H. Nuri
Affiliation:
IBM Rcsearch Division, Almaden Research Center 650 Harry Road, San Jose, CA 95120–6099
T. Suzuki
Affiliation:
IBM Rcsearch Division, Almaden Research Center 650 Harry Road, San Jose, CA 95120–6099
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Abstract

A systematic study on magnetic properties of (Fc/Pt) compositionally-modulated films as a function of substrate-deposition-temperature has been carried out. For films with (2.5ÅFe/18ÅPt)×40, the intrinsic perpendicular magnetic anisotropy Ku is found to increase with decreasing temperature for all the sarmples deposited at temperatures from -114 °C to 220°C during deposition. The higher the substrate-deposition-temperature, the larger the Ku values become. This result implies a possible contribution from the magne to-elastic effect to the total anisotropy. However, a major part responsible for the perpendicular anisotropy may be found in other mechanisms. The saturation magnetization is found to exceed the value for pure Fe at temperatures lower than 180K.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 232: Symposium T – Magnetic Materials: Microstructure and Properties , 1991 , 85
Copyright
Copyright © Materials Research Society 1991

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References

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