Density functional study of the aluminum - Graphite interface

Newton Ooi, James Adams

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Our group has previously performed a series of ab initio calculations to study the atomic structure, ideal work of adhesion, Wad, and bond character of several aluminum - ceramic interfaces. Periodic interfaces were used where the thicknesses of both the Al and ceramic slabs were previously converged with respect to surface energy. Using a plane-wave density functional code with the local density and generalized gradient approximation, our past calculations find the Wad is proportional to the surface energies of the mating materials, and the degree of polarity in the ceramic surface. Our calculations compare favorably with available experimental work of adhesion values of liquid Al on graphite, and Al on Al2 O3. We investigated interfacial geometries after atomic relaxation, and interfacial bonding via plots of charge density, charge density difference, the electron localization function, and the projected density of states. In this paper we focus on our preliminary results for the aluminum - graphite interface.

Original languageEnglish (US)
Pages (from-to)51-56
Number of pages6
JournalJournal of Computational Electronics
Volume3
Issue number1
DOIs
StatePublished - 2004

Fingerprint

Graphite
Aluminum
Density Functional
graphite
Surface Energy
Adhesion
Charge density
aluminum
Interfacial energy
Charge
Ab Initio Calculations
ceramics
Generalized Gradient
surface energy
Polarity
Density of States
adhesion
Plane Wave
Directly proportional
Liquid

Keywords

  • Aluminum
  • Ceramic
  • Density functional
  • Interfaces
  • Modeling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Modeling and Simulation

Cite this

Density functional study of the aluminum - Graphite interface. / Ooi, Newton; Adams, James.

In: Journal of Computational Electronics, Vol. 3, No. 1, 2004, p. 51-56.

Research output: Contribution to journalArticle

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