Origin of negative thermal expansion phenomenon in solids

Research output: Contribution to journalArticle

21 Citations (Scopus)

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

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thermal expansion
Thermal expansion
Entropy
platforms
entropy
matrices
configurations
Negative thermal expansion
Hot Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

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Origin of negative thermal expansion phenomenon in solids. / Liu, Zi-kui; Wang, Yi; Shang, Shunli.

In: Scripta Materialia, Vol. 65, No. 8, 01.10.2011, p. 664-667.

Research output: Contribution to journalArticle

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AU - Liu, Zi-kui

AU - Wang, Yi

AU - Shang, Shunli

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AB - 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.

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