Current density effects on the microstructure of zirconium thin films

Zahabul Islam, Baoming Wang, Md Amanul Haque

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We investigate the effect of electrical current density below the electromigration failure limit in nanocrystalline zirconium thin films using in-situ Transmission Electron Microscope and molecular dynamics simulation. At least one order of magnitude higher growth was seen at current density of 8.5 × 105 A/cm2 (Joule heating temperature 710 K) in 15 min compared to conventional thermal annealing at 873 K for 360 min. Simulation results support our hypothesis that the concurrent effects of electron wind force and Joule heating specifically target the grain boundaries, producing much higher grain boundary mobility compared to high temperature annealing alone.

Original languageEnglish (US)
Pages (from-to)18-21
Number of pages4
JournalScripta Materialia
Volume144
DOIs
StatePublished - Feb 1 2018

Fingerprint

Joule heating
Zirconium
Grain boundaries
Current density
grain boundaries
Annealing
current density
Thin films
microstructure
Microstructure
annealing
Electromigration
electromigration
thin films
Molecular dynamics
Electron microscopes
simulation
electron microscopes
molecular dynamics
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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Current density effects on the microstructure of zirconium thin films. / Islam, Zahabul; Wang, Baoming; Haque, Md Amanul.

In: Scripta Materialia, Vol. 144, 01.02.2018, p. 18-21.

Research output: Contribution to journalArticle

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AU - Wang, Baoming

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