Time and Orientation Dependent Internal Friction in Tin Crystals

概要

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The time changes in the amplitude dependent internal friction are studied in β-tin crystals, 99.99% pure, and oriented as the [001] axis is nearly perpendicular to the specimen axis. The measurements are made during the free decay of transverse vibration, at temperatures from 90℃ to-196℃. Contrary to the results obtained in the crystals oriented for the [001] single slip, it is found that the internal friction decreases with the time of excitation, and increases with the time of rest after the excitation. At low temperatures, discontinuous change in the strain amplitude occurs when the measurements are made under constant driving force.
社団法人日本物理学会の論文
1970-06-05