Effect of Electric Current on Trijunction Equilibrium and Grain Rotation of Lossy Dielectrics

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1 Scopus citations

Abstract

To understand the structural stability of lossy dielectrics under the action of an electric current, the effect of an electric current on the stress evolution, the change of chemical potential, and the electric energy stored in a grain boundary is examined. Analytical forms of the stress, chemical potential, and electric energy are obtained, which depend on the current density. The concept of an apparent grain boundary energy, which is a linear function of the square of the current density, is introduced. One needs to use the apparent grain boundary energy in analyzing the equilibrium state of a trijunction. An expression for the rate of grain rotation is proposed, which includes the contributions of the change of chemical potential and the electric energy in grain boundaries.

Original languageEnglish
Pages (from-to)4497-4501
Number of pages5
JournalJournal of Electronic Materials
Volume43
Issue number12
DOIs
StatePublished - Dec 2014

Bibliographical note

Publisher Copyright:
© 2014, The Minerals, Metals & Materials Society.

Keywords

  • Trijunction
  • electromigration
  • grain rotation
  • lossy dielectrics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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