It is well known that the Cr underlayer plays a critical role in generating large in-plane coercivity in Co-based magnetic thin films. In this paper we report in detail the Co-Sm (1̄ 100)[0001]//Cr (1̄ 21̄)[1̄ 01] epitaxy revealed by high resolution electron microscopy. The lattice mismatch between Co-Sm (1̄ 100) and Cr (1̄ 21̄) is less than 2%, suggesting an energetically favorable configuration. The high anisotropy observed in Co-Sm films is discussed by this epitaxial relation.
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Liu et al. (1996) studied this question.
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