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Magnetic Properties of Al/Tb-Fe-Co Multilayer Thin Films

Published online by Cambridge University Press:  28 February 2011

J.A. Barnard ,
B.D. Yan ,
M.H. Kim  and
G.W. Warren
J.A. Barnard
Affiliation:
The University of Alabama, Department of Metallurgical and Materials Engineering, Tuscaloosa, AL 35487-0202.
B.D. Yan
Affiliation:
North Carolina State University, Department of Materials Science and Engineering, Raleigh, NC 27695-7907
M.H. Kim
Affiliation:
Chungbuk National University, Department of Metallurgy, San 48, Cheongju, Chungbuk, South Korea
G.W. Warren
Affiliation:
The University of Alabama, Department of Metallurgical and Materials Engineering, Tuscaloosa, AL 35487-0202.
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Abstract

A series of periodic multilayer Al/Tb-Fe-Co thin films have been prepared by dc-magnetron sputtering. The films are of the form (xA/yB)n, where x and y are the thicknesses of the A and B layers respectively, and n is the number of bilayer units. Individual layers are from 2-40nm thick. The magnetic properties of the films have been measured as a function of Al and Tb-Fe-Co layer thicknesses by vibrating sample magnetometry (VSM). An homogeneous film of the Tb-Fe-Co alloy was grown under identical conditions and found to have in-plane easy magnetization. Pronounced interfacial and/or reduced dimension effects have been found in the multilayer systems. These include evidence for a “dead layer” in the interface regions (~2nm thick) and reversal of the direction of easy magnetization from in-plane (in the homogeneous thin film samples) to strongly perpendicular in the multilayer configuration.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 160 , 1989 , 617
Copyright
Copyright © Materials Research Society 1990

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