Materials Research Science and Engineering Center
Document Type
Article
Date of this Version
February 2003
Abstract
We have investigated the exchange coupling between an epitaxial Ni (50 Å) film with an out-of-plane magnetic easy axis and a NiO (600 Å) film by polar magneto-optic Kerr-effect measurements. The temperature dependences of exchange field HE for both as-deposited and field-cooled states exhibit the same blocking temperature TB~130 °C. The exchange field HE for the field-cooled state is lower than that for the as-deposited state. The hard-axis in-plane loop shows a much smaller value of HE. No coercivity enhancement is observed. The data are suggestive of linear coupling across the ferromagnet/antiferromagnet interface.
Comments
Published by American Institute of Physics. J. Applied Physics 93, 2091 (2003). ©2003 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.