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Element Specific Vector Magnetometry (Esvm) Via Soft X-Ray Magnetic Circular Dichroism

Published online by Cambridge University Press:  15 February 2011

V. Chakarian ,
H.-J. Lin ,
Y. U. Idzerda ,
E. E. Chaban ,
G. Meigs ,
J.-H. Park ,
C. J. Gutierrez ,
G. A. Prinz  and
C. T. Chen
V. Chakarian
Affiliation:
Naval Research Laboratory, Code 6345, Washington, DC 20375 USA
H.-J. Lin
Affiliation:
AT&T Bell Laboratories, 600 Mountain Ave., Murray Hill, NJ 07974 USA
Y. U. Idzerda
Affiliation:
Naval Research Laboratory, Code 6345, Washington, DC 20375 USA
E. E. Chaban
Affiliation:
AT&T Bell Laboratories, 600 Mountain Ave., Murray Hill, NJ 07974 USA
G. Meigs
Affiliation:
AT&T Bell Laboratories, 600 Mountain Ave., Murray Hill, NJ 07974 USA
J.-H. Park
Affiliation:
AT&T Bell Laboratories, 600 Mountain Ave., Murray Hill, NJ 07974 USA
C. J. Gutierrez
Affiliation:
Naval Research Laboratory, Code 6345, Washington, DC 20375 USA
G. A. Prinz
Affiliation:
Naval Research Laboratory, Code 6345, Washington, DC 20375 USA
C. T. Chen
Affiliation:
AT&T Bell Laboratories, 600 Mountain Ave., Murray Hill, NJ 07974 USA
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Abstract

Soft X-Ray Magnetic circular dichroism (SX-MCD) can be used to obtain element-specific magnetic hysteresis curves and to elucidate the two- and three-dimensional magnetization reversal processes for each constituent magnetic element of a heteromagnetic system. As a demonstration, two systems which exhibit in-plane magnetization reversal are studied: a thin Fe (100) singlecrystal film and a Fe1-xCox/Mn/Fel-xCox trilayer. The results for both systems show that the magnetic moment vector reverses via a combination of coherent rotation toward the nearest in-plane magnetically easy axis followed by the formation of orthogonal <100> domains which rapidly sweep across the sample. In the case of the trilayer, the moment reversal process is significantly more complex due to a strong ∼90° coupling between the magnetic moments of the two FeCo layers. By using element-specific vector magnetometry (ESVM), the details of this reversal process are revealed. Furthermore, the results of the SX-MCD for Mn show that Mn possesses a ferromagnetically aligned net magnetic moment which depicts a 2D magnetization behavior different than that for either Fe or Co.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 375: Symposia AA – Applications of Synchrotron Radiation Techniques to Materials Science , 1994 , 95
Copyright
Copyright © Materials Research Society 1995

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