Origin of negative thermal expansion phenomenon in solids

Research output: Contribution to journalArticle

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Abstract

We show that the negative thermal expansion (NTE) phenomenon originates from the existence of high pressure, small volume phases with higher entropy, with their configurations present in the stable phase matrix through thermal fluctuations, thus exists. Consequently, it extends the platform for designing structures with desired thermal expansion properties whether positive, negative, or zero. The theory is validated for a range of pure elements and compounds and utilized to provide insights to the NTE phenomenon in Fe3Pt and ZrW2O8.

Original languageEnglish (US)
Pages (from-to)664-667
Number of pages4
JournalScripta Materialia
Volume65
Issue number8
DOIs
StatePublished - Oct 1 2011

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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