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Professor John Evans' Outputs (4)

Structural Relaxation of Low-Density Amorphous Ice upon Thermal Annealing (2013)
Journal Article
Shephard, J. J., Evans, J. S., & Salzmann, C. G. (2013). Structural Relaxation of Low-Density Amorphous Ice upon Thermal Annealing. Journal of Physical Chemistry Letters, 4(21), 3672-3676. https://doi.org/10.1021/jz4020103

Despite the importance of low-density amorphous ice (LDA) in critical cosmological processes and its prominence as one of the polyamorphs of water there is still an incomplete picture of the processes that take place upon thermal annealing. Using Ram... Read More about Structural Relaxation of Low-Density Amorphous Ice upon Thermal Annealing.

Synthesis, structure and properties of the oxychalcogenide series A4O4TiSe4 (A=Sm, Gd, Tb, Dy, Ho, Er and Y) (2013)
Journal Article
Tuxworth, A., & Evans, J. (2014). Synthesis, structure and properties of the oxychalcogenide series A4O4TiSe4 (A=Sm, Gd, Tb, Dy, Ho, Er and Y). Journal of Solid State Chemistry, 210(1), 188-194. https://doi.org/10.1016/j.jssc.2013.11.006

Seven oxyselenide materials have been synthesised with composition A4O4TiSe4 (A=Sm, Gd–Er, Y) via solid state reactions of A2O3, TiSe2 and Se at 900 °C. They are all isostructural with Gd4O4TiSe4. Structures have been refined from powder X-ray diffra... Read More about Synthesis, structure and properties of the oxychalcogenide series A4O4TiSe4 (A=Sm, Gd, Tb, Dy, Ho, Er and Y).

Systematic and Controllable Negative, Zero, and Positive Thermal Expansion in Cubic Zr1–xSnxMo2O8 (2013)
Journal Article
Tallentire, S., Child, F., Fall, I., Vella-Zarb, L., Evans, I., Tucker, M., …Evans, J. (2013). Systematic and Controllable Negative, Zero, and Positive Thermal Expansion in Cubic Zr1–xSnxMo2O8. Journal of the American Chemical Society, 135(34), 12849-12856. https://doi.org/10.1021/ja4060564

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 exp... Read More about Systematic and Controllable Negative, Zero, and Positive Thermal Expansion in Cubic Zr1–xSnxMo2O8.

Structural Characterization and Physical Properties of the New Transition Metal Oxyselenide La2O2ZnSe2 (2013)
Journal Article
Tuxworth, A. J., McCabe, E. E., Free, D. G., Clark, S. J., & Evans, J. S. (2013). Structural Characterization and Physical Properties of the New Transition Metal Oxyselenide La2O2ZnSe2. Inorganic Chemistry, 52(4), 2078-2085. https://doi.org/10.1021/ic302484x

La2O2ZnSe2 adopts an unusual cation-ordered LaCuOS-related structure with both stripe- and checkerboard-ordered regions. Its structure has been determined using the symmetry mode approach. Optical measurements indicate that it is a wide band gap semi... Read More about Structural Characterization and Physical Properties of the New Transition Metal Oxyselenide La2O2ZnSe2.