Tuning thermal expansion from strong negative to zero to positive in Cu2-xZnxP2O7 solid solutions

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Naike Shi
  • Andrea Sanson
  • Alessandro Venier
  • Longlong Fan
  • Danilo Oliveira de Souza
  • Luca Olivi
  • Yuzhu Song
  • Xianran Xing
  • Jun Chen

Detail(s)

Original languageEnglish
Article number114289
Journal / PublicationScripta Materialia
Volume207
Online published23 Sep 2021
Publication statusPublished - 15 Jan 2022
Externally publishedYes

Abstract

Chemical substitution is an effective strategy to control the thermal expansion properties in solid solutions. In this work, a series of solid solutions Cu2-xZnxP2O7 (0 ≤ x ≤ 2) were synthesized by solid state reaction methods. The thermal expansion in Cu2-xZnxP2O7 is tuned from strong negative thermal expansion (αv ∼ -33.5×10−6 K−1, 100 - 375K) to near zero thermal expansion (αv ∼ -2.78×10−6 K−1, 100 - 225K), and then to positive thermal expansion gradually with increasing content of Zn2+ substitution. The direct experiment results reveal that the Zn2+ substitution diminishes the rigidity of Cu/Zn-O and P-O bonds and the transverse vibrations of O atoms arousing negative thermal expansion. The present work achieves the regulation of thermal expansion from negative to near zero and finally to positive in the Cu2P2O7 system.

Research Area(s)

  • Crystal structure, Framework structure materials, Negative thermal expansion, The control of thermal expansion, Transverse vibrations

Citation Format(s)

Tuning thermal expansion from strong negative to zero to positive in Cu2-xZnxP2O7 solid solutions. / Shi, Naike; Sanson, Andrea; Venier, Alessandro; Fan, Longlong; Ren, Yang; de Souza, Danilo Oliveira; Olivi, Luca; Song, Yuzhu; Xing, Xianran; Chen, Jun.

In: Scripta Materialia, Vol. 207, 114289, 15.01.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review