Journal
PHYSICAL REVIEW B
Volume 63, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.63.214403
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Co1-xMnx thin films epitaxially grown on GaAs(001) have been studied using reflection high-energy electron diffraction, x-ray diffraction, and the magneto-optical Kerr effect. The result shows that Co-rich films are body-centered cubic and ferromagnetic, and Mn-rich ones are face-centered cubic and antiferromagnetic. However, the film structure and magnetism at x similar to0.5 show strongly thickness-dependent behavior. The magnetic phases of ordered Co1-xMnx alloys (x = 0,1/4,1/2,3/4,1) in both bcc and fcc structures have also been investigated by a first-principles linearized augmented plane-wave calculation in the local-spin-density approximation. With the help of the calculated results, the correlation established in experiment between the structure and magnetism of Co1-xMnx alloys is better understood.
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