Dependence of exchange coupling on antiferromagnetic layer thickness in NiFe/CoO bilayers

Embargo until
Date
1998-06-01
Journal Title
Journal ISSN
Volume Title
Publisher
American Institute of Physics
Abstract
A systematic study of the dependence of exchange coupling in NiFe/CoO bilayers on CoO layer thickness tAF from 5 to 500 Å has been made. For large CoO thicknesses (tAF>100 Å), the exchange field varies as 1/tAF, whereas for small CoO thicknesses (tAF<100 Å), finite-size scaling of the Néel temperature TN and also the blocking temperature TB dominate.
Description
Keywords
exchange coupling, exchange field, CoO layer thickness, NiFe/CoO bilayers, nickel alloys, finite-size scaling, iron alloys, interface magnetism, ferromagnetic materials, exchange interactions (electron), cobalt compounds, antiferromagnetic materials, TN, Neel temperature, blocking temperature, NiFe-CoO
Citation
Source: Journal of Applied Physics 1 June 1998, vol.83, no.11, pp. 6822-4