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Magnetization reversal in diamond-shaped pseudo-spin-valve nanomagnets S. Goolaup and A. O. Adeyeyea
 

Summary: Magnetization reversal in diamond-shaped pseudo-spin-valve nanomagnets
S. Goolaup and A. O. Adeyeyea
Information Storage Materials Laboratory, Department of Electrical and Computer Engineering,
National University of Singapore, 4 Engineering Drive 3, Singapore 117576
N. Singh
Institute of Microelectronics, 11 Science Park Road, Singapore Science Park II, Singapore 117685
Received 13 June 2005; accepted 7 September 2005; published online 28 October 2005
A systematic investigation of the magnetization reversal process of diamond-shaped
Ni80Fe20 10 nm /Cu tCu nm /Ni80Fe20 40 nm pseudo-spin-valve nanostructures is presented. The
structures were fabricated on silicon substrate using deep ultraviolet lithography at 248 nm exposing
wavelength. By carefully selecting two ferromagnetic layer thicknesses, with different reversal
mechanisms, we have created a magnetic structure with unique magnetic properties. We observed
that the magnetization reversal process of the spin valve is strongly influenced by the Cu spacer
layer thickness. Our experimental results were substantiated with a three-dimensional
micromagnetic simulation. 2005 American Institute of Physics. DOI: 10.1063/1.2108150
I. INTRODUCTION
Advances in the use of controlled fabrication techniques
such as electron-beam lithography and lift-off process,13
fo-
cused ion-beam etching,4

  

Source: Adeyeye, Adekunle - Department of Electrical and Computer Engineering, National University of Singapore

 

Collections: Physics; Materials Science