Systematic and controllable negative, zero, and positive thermal expansion in cubic Zr1–xSnxMo2O8

Tallentire, S. E., Child, F., Fall, I., Vella-Zarb, L., Evans, I. R., Tucker, M. G., Keen, D. A., Wilson, C. and Evans, J. S.O. (2013) Systematic and controllable negative, zero, and positive thermal expansion in cubic Zr1–xSnxMo2O8. Journal of the American Chemical Society, 135(34), pp. 12849-12856. (doi: 10.1021/ja4060564)

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Abstract

We describe the synthesis and characterization of a family of materials, Zr1–xSnxMo2O8 (0 < x < 1), whose isotropic thermal expansion coefficient can be systematically varied from negative to zero to positive values. These materials allow tunable expansion in a single phase as opposed to using a composite system. Linear thermal expansion coefficients, αl, ranging from −7.9(2) × 10–6 to +5.9(2) × 10–6 K–1 (12–500 K) can be achieved across the series; contraction and expansion limits are of the same order of magnitude as the expansion of typical ceramics. We also report the various structures and thermal expansion of “cubic” SnMo2O8, and we use time- and temperature-dependent diffraction studies to describe a series of phase transitions between different ordered and disordered states of this material.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Wilson, Dr Claire
Authors: Tallentire, S. E., Child, F., Fall, I., Vella-Zarb, L., Evans, I. R., Tucker, M. G., Keen, D. A., Wilson, C., and Evans, J. S.O.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of the American Chemical Society
Publisher:American Chemical Society
ISSN:0002-7863
ISSN (Online):1520-5126
Published Online:29 July 2013

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