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Professor John Evans' Outputs (3)

Ferroelectric alignment of NLO chromophores in layered inorganic lattices: Structure of a stilbazolium metal-oxalate from powder diffraction data (2001)
Journal Article
Evans, J., Benard, S., & YuR. Clement, P. (2001). Ferroelectric alignment of NLO chromophores in layered inorganic lattices: Structure of a stilbazolium metal-oxalate from powder diffraction data. Chemistry of Materials, 13(11), 3813-+

The structure of the organic:inorganic layered material DAZOP[MnCr(ox)(3)](.)0 . 6CH(3)CN [DAZOP = 4-(4-dimethylamino- phenylazo)-1-methyl-pyridinium, which has 61 independent atoms in the asymmetric unit, has been solved from laboratory powder X-ray... Read More about Ferroelectric alignment of NLO chromophores in layered inorganic lattices: Structure of a stilbazolium metal-oxalate from powder diffraction data.

Pressure-induced cubic-to-orthorhombic phase transformation in the negative thermal expansion material HfW2O8 (2001)
Journal Article
Jorgensen, J., Hu, Z., Short, S., Sleight, A., & Evans, J. (2001). Pressure-induced cubic-to-orthorhombic phase transformation in the negative thermal expansion material HfW2O8. Journal of Applied Physics, 89(6), 3184-3188

The effect of pressure on the crystal structure of HfW2O8 has been investigated by neutron powder diffraction. At a hydrostatic pressure of 0.62 GPa at room temperature the cubic material transforms, with a 5% reduction in volume, to the same orthorh... Read More about Pressure-induced cubic-to-orthorhombic phase transformation in the negative thermal expansion material HfW2O8.

A new three-dimensional incommensurately modulated cubic phase (in ZrP2B7) and its symmetry characterization via temperature- dependent electron diffraction (2001)
Journal Article
Withers, R., Tabira, Y., Evans, J., King, I., & Sleight, A. (2001). A new three-dimensional incommensurately modulated cubic phase (in ZrP2B7) and its symmetry characterization via temperature- dependent electron diffraction. Journal of Solid State Chemistry, 157(1), 186-192

A detailed electron diffraction study has been made of the ZrP2O7 member of the AM(2)O(7) family of framework structures and of its temperature-dependent structural phase transformations. The room-temperature phase corresponds to a primitive 3 x 3 x... Read More about A new three-dimensional incommensurately modulated cubic phase (in ZrP2B7) and its symmetry characterization via temperature- dependent electron diffraction.