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electromigration
<electronics> Mass transport due to momentum exchange between
conducting electrons and diffusing metal atoms.
Electromigration causes progressive damage to the metal
conductors in an integrated circuit. It is characteristic
of metals at very high current density and temperatures of
100C or more.
The term was coined by Professor Hilbert Huntington in the
late 1950s because he didn't like the German use of the word
"electrotransport".
Mass transoport occurs via the Einstein relation J=DFC/kT
where F is the driving force for the transoport. For
electromigraiton F is z*epj and z* is an electromigration
parameter relating the momentum exchange and z is the charge
of the "diffusing" species.
(1999-02-25)
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Nearby terms:
Electrically Alterable Programmable Read-Only Memory « Electrically Erasable Programmable Read-Only Memory « Electromagnetic Compatibility « electromigration » electron » electronic commerce » Electronic Commerce Dictionary
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
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