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
SN - 0003-6951
VL - 109
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 18
M1 - 181901
ER -