Multilayered Co/Pt films with Co layer thickness ranging from 10 to 26 Å have been studied by the NMR spin-echo method at 2 K. The rapid increase of the signal around 210 MHz as the Co layer thickness is decreased indicates the alloy formation at the interfaces. This signal coincides with the resonance spectrum of Co3Pt alloy. The latter corresponds to a disordered alloy and is coherent with the shifts of the satellite lines observed in a dilute alloy. The layer thickness of Co forming Co3Pt alloy at each interface is estimated to be about 4 Å.
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Dang et al. (1992) studied this question.
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