X-ray and neutron scattering

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Structural characterization of the betatoalpha superionic transition in Ag2HgI4 and Cu2HgI4

Journal of Physics Condensed Matter IOP Publishing 12:16 (2000) 3751

Authors:

S Hull, DA Keen
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Phase transitions in tridymite studied using ‘Rigid Unit Mode’ theory, Reverse Monte Carlo methods and molecular dynamics simulations

Mineralogical Magazine Mineralogical Society 64:2 (2000) 267-283

Authors:

MT Dove, AKA Pryde, DA Keen
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Aspects of the structure and dynamics of the CMR material Nd0.5Pb0.5MnO3

Physica B Condensed Matter Elsevier 276 (2000) 774-775

Authors:

A Mellergård, DA Keen, M Harris, RL McGreevy
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Magnetic excitations of single-crystal PrBa2Cu3O6.2

PHYSICA B 276 (2000) 799-800

Authors:

SJS Lister, AT Boothroyd, NH Andersen, AA Zhokhov, AN Christensen

Abstract:

Measurements of the low-energy magnetic excitations in single-crystal PrBa2Cu3O6.2, and in YBa2Cu3O6.2 for comparison, have been performed using inelastic neutron scattering. An excitation with weak dispersion is seen, which is compared to a spin-wave model based on the lowest lying crystal field levels of the Pr ion, and including the effect of an anisotropic coupling to the Cu magnetic moments, as well as a Pr-Pr exchange interaction. (C) 2000 Elsevier Science B.V. All rights reserved.
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Modeling the magnetic structure of Dy7Fe3 metallic glass

Physical Review B American Physical Society (APS) 61:1 (2000) 487-491

Authors:

L Karlsson, A Wannberg, RL McGreevy, DA Keen
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