Phys. Rev. B 64, 184430 (2001) [4 pages]

Exchange coupling in nanostructured CoO/NiFe networks

Abstract

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L. Sun¹, Y. Ding², C. L. Chien³, and P. C. Searson¹
¹Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, Maryland 21218
²Earth and Planetary Sciences, The Johns Hopkins University, Baltimore, Maryland 21218
³Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218

Received 5 March 2001; published 22 October 2001

CoO/NiFe(Ni₈₁Fe₁₉) layers were sputtered onto porous alumina templates to form an interconnected network structure. The antiferromagnetic/ferromagnetic coupled nanostructured bilayers exhibit large enhancements of exchange bias H_E and coercivity H_c compared to the continuous AF/FM films with same layer thickness. The temperature dependence of H_E and H_C on the NiFe thickness is reported.

URL:

http://link.aps.org/doi/10.1103/PhysRevB.64.184430

DOI:

10.1103/PhysRevB.64.184430

PACS:

75.75.+a, 75.30.Et, 75.70.Cn

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Phys. Rev. B 64, 184430 (2001) [4 pages]

Exchange coupling in nanostructured CoO/NiFe networks