Electromigration in gold-silver alloys

Vol. 10, No. 12 18.

ABSTRACTS OF PAPERS TO APPEAR IN

J.

PHYS. CHEM. SOLIDS

xi

ELECFROMIGRATION IN GOLD—

electron-beam microprobe. The effective charge.

SILVER ALLOYS Gerard L. Hofman, Argonne National Laboratory, Idaho Falls, Idaho 83401 and A.G. Guy, Department of Metallurgical and Materials Engineering, University of Florida, Gainesville, Florida 32601

q*, of both gold arid silver was found to be independent of composition across the entire phase diagram at temperatures near 930°C. The effective charge of silver is equal to that of gold within the accuracy of the experiment; the average value is —9e. No temperature dependence of the average effective charge could be detected in a 50—50 atomic per cent alloy in the temperature range 860—940°C. The current density employed in this 2. investigation was about i0~A/cm

Electromigration of gold and silver in gold— silver alloys was studied under isothermal conditions. An analysis was developed to determine the effective charges of the migrating gold and silver ions, employing inert markers and an

Received 20 December 1971 Re~ised22 Feha~arv1972