Abstract
Recent measurements of the quasi-static spin-freezing temperature, Tf, of thin Cu1-xMnx layers (x = 0.04, 0.07, 0.14) in magnetron sputtered multilayer samples (MS) of CuMn alternated with Cu or Si revealed two different apparently “universal” curves for the ratio TfTfb is the bulk freezing temperature for a given x) for CuMnCu and CuMnSi MS. We show that cooling the substrates leaves the CuMnCu MS data unchanged, but moves the nSi MS data closer to the “universal” curve for the CuMnCu MS show also that TfTfD for AgMnAg MS agrees with the CuMnCu MS “Universal” curve.
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