Anomalous Behaviour of the Zener Relaxation in Cu-Au
نویسندگان
چکیده
Measurements of the Zener relaxation in single crystals of Cu-18at.%Au and Cu3Au are presented. In the laat.% alloy only one internal friction peak is observed at low frequencies (of the order of 1 Hz). This peak is only slightly wider than a Debye's peak. An additional hump appears at intermediate frequencies (of the order of 60 Hz). The Zener peak in the Cu3Au alloy is accompanied by an additional maximum produced by the order-disorder transition. A measurement of the derivative of the damping with respect to the frequency through the use of a pendulum with variable moment of inertia shows that non-linear effects are present in the Zener relaxation in both alloys.
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تاریخ انتشار 2016