Tunable thermal expansion and magnetism in Zr-doped ScF3

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

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Author(s)

  • Tao Wang
  • Jiale Xu
  • Lei Hu
  • Wei Wang
  • Rongjin Huang
  • Fei Han
  • Zhao Pan
  • Jinxia Deng
  • Laifeng Li
  • Jun Chen
  • Xianran Xing

Detail(s)

Original languageEnglish
Article number181901
Journal / PublicationApplied Physics Letters
Volume109
Issue number18
Publication statusPublished - 31 Oct 2016
Externally publishedYes

Abstract

The negative thermal expansion (NTE) behavior provides us an opportunity to design materials with controllable coefficient of thermal expansion (CTE). In this letter, we report a tunable isotropic thermal expansion in the cubic (Sc1- xZrx)F3+ δ over a wide temperature and CTE range (αl = -4.0 to+ 16.8 × 10-6 K-1, 298-648 K). The thermal expansion can be well adjusted from strong negative to zero, and finally to large positive. Intriguingly, isotropic zero thermal expansion (αl = 2.6 × 10-7 K-1, 298-648 K) has been observed in the composition of (Sc0.8Zr0.2)F3+ δ. The controllable thermal expansion in (Sc1- xZrx)F3+ δ is correlated to the local structural distortion. Interestingly, the ordered magnetic behavior has been found in the zero thermal expansion compound of (Sc0.8Zr0.2)F3+ δ at room temperature, which presumably correlates with the unpaired electron of the lower chemical valence of Zr cation. The present study provides a useful reference to control the thermal expansion and explore the multi-functionalization for NTE materials.

Bibliographic Note

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Citation Format(s)

Tunable thermal expansion and magnetism in Zr-doped ScF3. / Wang, Tao; Xu, Jiale; Hu, Lei; Wang, Wei; Huang, Rongjin; Han, Fei; Pan, Zhao; Deng, Jinxia; Ren, Yang; Li, Laifeng; Chen, Jun; Xing, Xianran.

In: Applied Physics Letters, Vol. 109, No. 18, 181901, 31.10.2016.

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