The growth of single-crystal CoxMn1-x alloy on GaAs(0 0 1) has been ac
hieved at room temperature using molecular beam epitaxy. The body-cent
ered-cubic structure is determined by in situ reflection high energy e
lectron diffraction (RHEED). In-plane magnetic anisotropy has been det
ermined using the longitudinal magneto-optical Kerr effect technique.
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