Zero Thermal Expansion and Abrupt Amorphization on Compression in Anion Excess ReO3-Type Cubic YbZrF7
- Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemistry and Biochemistry
- Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division. Advanced Photon Source
- Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemistry and Biochemistry. School of Materials Science and Engineering
In this paper, heat treatment of cubic YbZrF7, after quenching from 1000 °C, leads to a material displaying precisely zero thermal expansion at ~300 K and negative thermal expansion at lower temperatures. The zero thermal expansion is associated with a minimum in the lattice constant at ~300 K. X-ray total scattering measurements are consistent with a previously proposed model in which the incorporation of interstitial fluoride into the ReO3-related structure leads to both edge and corner sharing coordination polyhedra. The temperature dependence of the experimental pair correlation functions suggests that the expansions of edge and corner sharing links partly compensate for one another, supporting the hypothesis that the deliberate incorporation of excess fluoride into ReO3 structure materials can be used as a design strategy for controlling thermal expansion. Cubic YbZrF7 has a bulk modulus, K0, of 55.4(7) GPa and displays pronounced pressure-induced softening [K0' = -27.7(6)] prior to an abrupt amorphization on compression above 0.95 GPa. Finally, the resulting glass shows a single sharp scattering maximum at Q ~ 1.6 Å–1.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Georgia Institute of Technology, Atlanta, GA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- Grant/Contract Number:
- AC02-06CH11357; DMR-1607316
- OSTI ID:
- 1467068
- Journal Information:
- Chemistry of Materials, Vol. 30, Issue 9; ISSN 0897-4756
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Polymorphism in M(H 2 PO 2 ) 3 (M = V, Al, Ga) compounds with the perovskite-related ReO 3 structure
|
journal | January 2019 |
Perovskite-related ReO3-type structures
|
journal | January 2020 |
Uniaxial thermal expansion behaviors and ionic conduction in a layered (NH 4 ) 2 V 3 O 8
|
journal | January 2020 |
Inorganic–organic hybridization induced uniaxial zero thermal expansion in MC 4 O 4 (M = Ba, Pb)
|
journal | January 2019 |
Similar Records
Crossover of thermal expansion from positive to negative by removing the excess fluorines in cubic ReO3-type TiZrF7-x
Thermal Expansion and Response to Pressure of Double-ReO3 -Type Fluorides NaMVF6 (M = Nb, Ta)