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Published August 1, 1983 | public
Journal Article Open

Formation of an amorphous alloy by solid-state reaction of the pure polycrystalline metals


Single-phase Au1-xLax alloys, with 0.3≲x≲0.5, have been formed through solid-state interdiffusion of pure polycrystalline Au and La thin films (100-600 Å) at temperatures of 50-80°C. The reaction is driven by the large negative heat of mixing in the amorphous alloy and occurs at low temperatures by the anomalously fast diffusion of Au in La. The composition regime giving a single-phase amorphous product is explained with use of a free-energy diagram.

Additional Information

©1983 The American Physical Society. Received 13 May 1983. The authors would like to thank David Baxter for assistance with the sample preparation. This work was supported by the U.S. Department of Energy, Project Agreement No. DE-AT03-81ER-10870 under Contract No. DE-AM03-76SF00767, and by the Argonne National Laboratories.


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