Growth, structure, and magnetism of 帠 -phase Mn ultrathin films on Cu3Au (100)
Journal
Journal of Applied Physics
Journal Volume
97
Journal Issue
10
Date Issued
2005
Author(s)
Abstract
Ultrathin �^-phase (face-center cubic) Mn films were prepared by epitaxial growth on Cu3Au(100). Kinematic analysis of low energy electron diffraction I?V showed a structure transformation of Mn films from nearly face-center cubic to face-center tetragonal with increasing coverage. No ferromagnetic signal in Mn?Cu3Au(100) was observed. For 21 ML capping film of Fe on Mn films, the hysteresis loop of Fe was biased. The bias field for 21MLFe?15MLMn?Cu3Au(100) was ��200Oe at 110 K with the blocking temperature Tb��300K. This observation of exchange bias substantiates the theoretical prediction of antiferromagnetism in �^-phase Mn.
SDGs
Type
conference paper