publication . Article . 2017

Ultra-low thermal expansion realized in giant negative thermal expansion materials through self-compensation

Hui Wu;
Open Access English
  • Published: 01 Oct 2017 Journal: APL Materials (issn: 2166-532X, Copyright policy)
  • Publisher: AIP Publishing LLC
Abstract
Materials with zero thermal expansion (ZTE) or precisely tailored thermal expansion are in urgent demand of modern industries. However, the overwhelming majority of materials show positive thermal expansion. To develop ZTE or negative thermal expansion (NTE) materials as compensators has become an important challenge. Here, we present the evidence for the realization of ultra-low thermal expansion in Mn–Co–Ge–In particles. The bulk with the Ni2In-type hexagonal structure undergoes giant NTE owing to a martensitic magnetostructural transition. The major finding is that the thermal expansion behavior can be totally controlled by modulating the crystallinity degree...
Subjects
free text keywords: Biotechnology, TP248.13-248.65, Physics, QC1-999
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