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Professor John Evans' Outputs (8)

Characterization of oxygen dynamics in ZrW₂O₈ (2005)
Journal Article
Hampson, M., Evans, J., & Hodgkinson, P. (2005). Characterization of oxygen dynamics in ZrW₂O₈. Journal of the American Chemical Society, 127(43), 15175-15181. https://doi.org/10.1021/ja054063z

The dynamics of oxygen motion in ZrW2O8 have been characterized using O-17 solid-state NMR. Rates of dynamic exchange have been extracted from magnetization transfer experiments over a temperature range of 40 to 226 degrees C, and distinct values for... Read More about Characterization of oxygen dynamics in ZrW₂O₈.

The crystal structure of alpha-La2Mo2O9 and the structural origin of the oxide ion migration pathway (2005)
Journal Article
Evans, I., Howard, J., & Evans, J. (2005). The crystal structure of alpha-La2Mo2O9 and the structural origin of the oxide ion migration pathway. Chemistry of Materials, 17(16), 4074-4077. https://doi.org/10.1021/cm050049%2B

We describe for the first time the full 3D atomic structure of room-temperature alpha-La2Mo2O9. The material, despite its simple chemical formula, has a remarkable 312 crystallographically unique atoms and is thus one of the most complex oxide struct... Read More about The crystal structure of alpha-La2Mo2O9 and the structural origin of the oxide ion migration pathway.

The synthesis and characterisation of Cu₂MX₄ (M = W or Mo; X = S, Se or S/Se) materials prepared by a solvothermal method (2005)
Journal Article
Crossland, C., Hickey, P., & Evans, J. (2005). The synthesis and characterisation of Cu₂MX₄ (M = W or Mo; X = S, Se or S/Se) materials prepared by a solvothermal method. Journal of materials chemistry, 15(34), 3452-3458. https://doi.org/10.1039/b507129a

This paper describes the synthesis of a family of layered materials with general formula Cu2MX4 (M = W or Mo; X = S, Se or S/Se) by a solvothermal route. The effect of synthesis temperature has been investigated and found to determine the structural... Read More about The synthesis and characterisation of Cu₂MX₄ (M = W or Mo; X = S, Se or S/Se) materials prepared by a solvothermal method.

A synthetic route to size-controlled fcc and fct FePt nanoparticles (2005)
Journal Article
Howard, L., Nguyen, H., Giblin, S., Tanner, B., Terry, I., Hughes, A., & Evans, J. (2005). A synthetic route to size-controlled fcc and fct FePt nanoparticles. Journal of the American Chemical Society, 127(29), 10140-10141. https://doi.org/10.1021/ja051669e

We report here a new synthetic route to FePt nanoparticles using a stoichiometric mixture of Na2Fe(CO)4 and Pt(acac)2. The structure of FePt nanoparticles, their size, chemical composition, and magnetic property can be controlled by various synthetic... Read More about A synthetic route to size-controlled fcc and fct FePt nanoparticles.

Synthesis and NMR studies of O-17 enriched AM(2)O(8) phases (2005)
Journal Article
Hampson, M., Allen, S., King, I., Crossland, C., Hodgkinson, P., Harris, R., …Evans, J. (2005). Synthesis and NMR studies of O-17 enriched AM(2)O(8) phases. Solid State Sciences, 7(7), 819-826

This paper describes synthetic routes to produce highly O-17 enriched samples of the negative thermal expansion materials ZrW2O8 and ZrMo2O8. In the case of ZrW2O8 enriched samples can be produced either via enriched Zr-17 O-2 and (WO3)-O-17, which h... Read More about Synthesis and NMR studies of O-17 enriched AM(2)O(8) phases.

Solving molecular crystal structures from laboratory X-ray powder diffraction data with DASH: the state of the art and challenges (2005)
Journal Article
Florence, A., Shankland, N., Shankland, K., David, W., Pidcock, E., Xu, X., …Frampton, C. (2005). Solving molecular crystal structures from laboratory X-ray powder diffraction data with DASH: the state of the art and challenges. Journal of Applied Crystallography, 38, 249-259

The crystal structures of 35 molecular compounds have been redetermined from laboratory monochromatic capillary transmission X-ray powder diffraction data using the simulated-annealing approach embodied within the DASH structure solution package. The... Read More about Solving molecular crystal structures from laboratory X-ray powder diffraction data with DASH: the state of the art and challenges.

Structural chemistry of A(3)CuBO(6) (A = Ca, Sr; B=Mn, Ru, Ir) as a function of temperature (2005)
Journal Article
Aldridge, A., Battle, P., Evans, J., Moore, C., Prior, T., & Wiseman, P. (2005). Structural chemistry of A(3)CuBO(6) (A = Ca, Sr; B=Mn, Ru, Ir) as a function of temperature. Inorganic Chemistry, 44(2), 197-205

Variable temperature X-ray and neutron powder diffraction techniques have been used to identify structural phase transitions in Cu-rich A(3)A'BO6 phases. A transition from monoclinic to rhombohedral symmetry was observed by X-ray diffraction between... Read More about Structural chemistry of A(3)CuBO(6) (A = Ca, Sr; B=Mn, Ru, Ir) as a function of temperature.