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Specific-heat anomaly during vitrification of hydrided Fe2Er single crystals

Fecht, H. J. and Fu, Z. and Johnson, W. L. (1990) Specific-heat anomaly during vitrification of hydrided Fe2Er single crystals. Physical Review Letters, 64 (15). pp. 1753-1756. ISSN 0031-9007. doi:10.1103/PhysRevLett.64.1753.

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A solid-state amorphization reaction is observed on hydrided, initially single-crystalline, Fe2Er powder samples (Fe2ErHx, 3.0 < x <3.4). Specific-heat measurements at constant concentration (x=3.4) show pronounced premelting effects exhibiting a lambda-type transition at Tc=475.6 K and a logarithmic temperature dependence. This typical feature of an instability underlying the "melting" transition has been predicted if the vitrification occurs in the vicinity of the triple point between supersaturated crystal, undercooled liquid, and glass.

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Additional Information:©1990 The American Physical Society. Received 15 December 1989. The financial support from the U. S. Department of Energy (No. DE-FG03-86ER45242), the expert technical assistance of Dr. C. W. Nieh, C. Garland, and H. Lee and stimulating discussions with Dr. R. Bormann, Dr. A. Dommann, Dr. H. Gleiter, Dr. E. Hellstern, Dr. Mo Li, and Dr. K. Samwer are gratefully acknowledged.
Issue or Number:15
Record Number:CaltechAUTHORS:FECprl90
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1973
Deposited By: Tony Diaz
Deposited On:28 Feb 2006
Last Modified:08 Nov 2021 19:44

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