electromigration


Also found in: Acronyms, Wikipedia.

electromigration

[i¦lek·trō·mī′grā·shən]
(analytical chemistry)
A process used to separate isotopes or ionic species by the differences in their ionic mobilities in an electric field.
(physical chemistry)
The movement of ions under the influence of an electrical potential difference.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
References in periodicals archive ?
Bazinet, Electromigration Feasibility of Green Tea Catechins, J.
This is because high voltage gradient causes the passage of high electric current, which leads to high electromigration with subsequent substantial transfer of momentum to the surrounding pore-fluid molecules [66].
There could be significant increase in the electromigration resistance of copper without having to compromise with its conductivity.
Bower, "Three dimensional finite element analysis of the evolution of voids and thin films by strain and electromigration induced surface diffusion," Journal of the Mechanics and Physics of Solids, vol.
Chen, "Electromigration of Sn-9wt.%Zn solder," Journal of Electronic Materials, vol.
Among the topics are conventional and advanced electron transmission microscopy, observing chemical reactions using transmission electron microscopy, in-situ transmission electron microscopy studies of oxidation, current-induced transport: electromigration, and cathodoluminescence in scanning and transmission electron microscopies.
Cu with its low resistivity and high electromigration resistance is one of the most attractive materials for future devices.
FineSim Pro also has a separate option for IR drop and electromigration analysis.
In addition to the abstracts, eight full papers report original research into positron annihilation in ion-implanted zinc oxide, optical characteristics of tungsten oxide thin films prepared by the sputtering technique, magnetization mechanisms of nano-magnetic fluid, the clustering of arsenic atoms in silicon during low-temperature annealing, effects of current density on the composition and microstructure of an electrodeposited silicon diffusion layer, positron annihilation and micro-hardness measurement of 6063 and 6066 alloys with compromise in ingot aluminum, the stress-induced migration and trapping of hydrogen in AISI403 steel, and electromigration force on a proton with a bound state.
For example, selective electromigration of the metals in the solder (SnPb) was evident between many capacitors.
Professor Cemal Basaran, the director of the Electronics Packaging Lab in UB's School of Engineering and Applied Sciences, says that the four years of quantum mechanics calculations performed by him and his doctoral student Tarek Ragab have proved that higher current density in carbon nanotubes does not lead to electromigration and thermomigration.