Abstract
The CoO antiferromagnetic ordering in exchange-biased (001) superlattices has been determined as a function of temperature and magnetic field using neutron diffraction methods. The Co spins preferentially align in domains in which the spins are perpendicular to the net moment direction. This 90° orientation between the and CoO spins is a direct consequence of the interfacial exchange coupling giving rise to exchange biasing, as is not observed in a comparable MgO/CoO superlattice.
- Received 17 June 1997
DOI:https://doi.org/10.1103/PhysRevLett.80.608
©1998 American Physical Society