Role of Lu and la in the intergranular films on growth of the prism surface in β-Si3N4

A molecular dynamics study

Yun Jiang, Steve Garofalini

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The different roles of Lu and La in the intergranular film in silicon nitride on the growth morphology are investigated via molecular dynamics simulations. While advanced microscopy shows each rare earth on the prism surface at room temperature, each additive affects the outward (perpendicular) growth of the surface differently. The simulations show the effect of elevated temperature on the adsorption of La and Lu on this surface that affects growth and provides the atomistic mechanism for the different growth morphology.

Original languageEnglish
Pages (from-to)97-100
Number of pages4
JournalScripta Materialia
Volume113
DOIs
Publication statusPublished - 2016

Fingerprint

Prisms
prisms
Molecular dynamics
molecular dynamics
Silicon nitride
silicon nitrides
Rare earths
Microscopic examination
rare earth elements
simulation
microscopy
Adsorption
Temperature
adsorption
silicon nitride
Computer simulation
room temperature
temperature

Keywords

  • Interfaces
  • Intergranular films
  • Molecular simulations
  • Rare earths

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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AB - The different roles of Lu and La in the intergranular film in silicon nitride on the growth morphology are investigated via molecular dynamics simulations. While advanced microscopy shows each rare earth on the prism surface at room temperature, each additive affects the outward (perpendicular) growth of the surface differently. The simulations show the effect of elevated temperature on the adsorption of La and Lu on this surface that affects growth and provides the atomistic mechanism for the different growth morphology.

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KW - Rare earths

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