Published April 9, 1990
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Journal Article
Open
Specific-heat anomaly during vitrification of hydrided Fe2Er single crystals
- Creators
- Fecht, H. J.
- Fu, Z.
- Johnson, W. L.
Chicago
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Abstract
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.
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.Files
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