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Substructure-Magnetic Property Correlation in Co/ag Composite Thin Films

Published online by Cambridge University Press:  26 February 2011

C.P Reed ,
R.J. Deangelis ,
S.H. Liou ,
S. Nafis ,
John A. Woollam ,
K.W. Lee  and
R.J. Jacob
C.P Reed
Affiliation:
Mechanical Engineering Department, University of Nebraska-Lincoln, Lincoln, NE 68588 Center for Materials Research and Analysis, University of Nebraska-Lincoln, Lincoln, NE 68588
R.J. Deangelis
Affiliation:
Mechanical Engineering Department, University of Nebraska-Lincoln, Lincoln, NE 68588 Center for Materials Research and Analysis, University of Nebraska-Lincoln, Lincoln, NE 68588
S.H. Liou
Affiliation:
Behlen Laboratory of Physics, University of Nebraska-Lincoln, Lincoln, NE 68588 Center for Materials Research and Analysis, University of Nebraska-Lincoln, Lincoln, NE 68588
S. Nafis
Affiliation:
Electrical Engineering Department, University of Nebraska-Lincoln, Lincoln, NE 68588
John A. Woollam
Affiliation:
Electrical Engineering Department, University of Nebraska-Lincoln, Lincoln, NE 68588 Center for Materials Research and Analysis, University of Nebraska-Lincoln, Lincoln, NE 68588
K.W. Lee
Affiliation:
Center for Materials Research and Analysis, University of Nebraska-Lincoln, Lincoln, NE 68588
R.J. Jacob
Affiliation:
Nano Probe Laboratory of the Markey Cancer Center and Department of Microbiology and Immunology, University of Kentucky, Lexington, KY 40506
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Abstract

Three series of nanostructured, μm thick, Co/Ag composite thin films (13, 39 and 61 volume % Co) were produced by dc magnetron sputtering at various substrate temperatures (100–600°C) to determine their magnetic properties and characterize the microstructure. The films were found to be composed of finely dispersed Ag and Co particles. The film surfaces become rougher as the substrate temperature was increased. The crystal lattice structure of the Co was found to be fcc except at the lower substrate temperatures (<300°C) in the 61 volume % films where it was found to be a mixture of fcc and some hcp. The average diffracting particle size of both the Co and Ag rich phases increase with substrate temperature. The magnetic coercivity of the films reached a maximum value when the Co particle size was between 100–150Å.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 231: Symposium S – Magnetic Surfaces, Thin Films and Multilayers , 1991 , 329
Copyright
Copyright © Materials Research Society 1992

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References

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