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Time-Resolved Measurements of Solidification and Undercooling in Metals and Alloys

  • Harry A. Atwater (a1), Jeffrey A. West (a2), Patrick M. Smith (a2), M.J. Aziz (a2), J.Y. Tsao (a3), P.S. Peercy (a3) and Michael O. Thompson (a4)...

Abstract

We have performed nanosecond-resolution measurements of the lateral electrical resistivity of thin metal films on insulating substrates. Comparison of transient resistivity measurements with optical reflectivity measurements and heat-flow calculations permits the determination of the position and velocity of a planar crystal/melt interface, and an estimate of undercooling during pulsed laser melting of metals. We report detailed results for rapid solidification of Ni, including the observation of hypercooling of .liquid Ni.

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Time-Resolved Measurements of Solidification and Undercooling in Metals and Alloys

  • Harry A. Atwater (a1), Jeffrey A. West (a2), Patrick M. Smith (a2), M.J. Aziz (a2), J.Y. Tsao (a3), P.S. Peercy (a3) and Michael O. Thompson (a4)...

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