Tunable thermal expansion and magnetism in Zr-doped ScF3

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

doi:10.1063/1.4966958

Tunable thermal expansion and magnetism in Zr-doped ScF₃

Tao Wang
, Jiale Xu
, Lei Hu
, Wei Wang
, Rongjin Huang
, Fei Han
, Zhao Pan
, Jinxia Deng
, Yang Ren
, Laifeng Li
, Jun Chen^*
, Xianran Xing

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

26 Citations (Scopus)

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 (Sc_1- _xZr_x)F₃₊ _δ over a wide temperature and CTE range (α_l = -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 (α_l = 2.6 × 10^-7 K^-1, 298-648 K) has been observed in the composition of (Sc_0.8Zr_0.2)F₃₊ _δ. The controllable thermal expansion in (Sc_1- _xZr_x)F₃₊ _δ is correlated to the local structural distortion. Interestingly, the ordered magnetic behavior has been found in the zero thermal expansion compound of (Sc_0.8Zr_0.2)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.

Original language	English
Article number	181901
Journal	Applied Physics Letters
Volume	109
Issue number	18
DOIs	https://doi.org/10.1063/1.4966958
Publication status	Published - 31 Oct 2016
Externally published	Yes

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@article{3dfc55c2af5e4036bc43d077ef8eee87,

title = "Tunable thermal expansion and magnetism in Zr-doped ScF3",

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.",

author = "Tao Wang and Jiale Xu and Lei Hu and Wei Wang and Rongjin Huang and Fei Han and Zhao Pan and Jinxia Deng and Yang Ren and Laifeng Li and Jun Chen and Xianran Xing",

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TY - JOUR

T1 - Tunable thermal expansion and magnetism in Zr-doped ScF3

AU - Wang, Tao

AU - Xu, Jiale

AU - Hu, Lei

AU - Wang, Wei

AU - Huang, Rongjin

AU - Han, Fei

AU - Pan, Zhao

AU - Deng, Jinxia

AU - Ren, Yang

AU - Li, Laifeng

AU - Chen, Jun

AU - Xing, Xianran

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2016/10/31

Y1 - 2016/10/31

N2 - 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.

AB - 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.

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U2 - 10.1063/1.4966958

DO - 10.1063/1.4966958

M3 - RGC 21 - Publication in refereed journal

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