David Keen: Publications

SXD – the single‐crystal diffractometer at the ISIS spallation neutron source

Journal of Applied Crystallography International Union of Crystallography (IUCr) 39:5 (2006) 714-722

Authors:

David A Keen, Matthias J Gutmann, Chick C Wilson

Magnetic Structure of MnO at 10 K from Total Neutron Scattering Data

Physical Review Letters American Physical Society (APS) 96:4 (2006) 047209

Authors:

Andrew L Goodwin, Matthew G Tucker, Martin T Dove, David A Keen

Abstract:

Total neutron scattering data from a powdered sample of MnO collected at 10 K have been analyzed using the reverse Monte Carlo method to refine the nuclear and magnetic structure. The results give the first unambiguous assignment of the average magnetic structure. The magnetic moments are aligned ferromagnetically within (111) sheets with the magnetization vectors of alternate sheets along axes parallel and antiparallel to the <112> directions, albeit with a small modulated out-of-plane component. Small displacements of Mn and O (modulated with the same periodicity) accompany the magnetic ordering and both atomic and magnetic structures may be described in the monoclinic space group C2.

High-temperature, structural disorder, phase transitions, and piezoelectric properties of GaPO4

Physical Review B American Physical Society (APS) 73:1 (2006) 014103

Authors:

J Haines, O Cambon, N Prudhomme, G Fraysse, DA Keen, LC Chapon, MG Tucker

Negative Thermal Expansion inZrW2O8: Mechanisms, Rigid Unit Modes, and Neutron Total Scattering

Physical Review Letters American Physical Society (APS) 95:25 (2005) 255501

Authors:

Matthew G Tucker, Andrew L Goodwin, Martin T Dove, David A Keen, Stephen A Wells, John SO Evans

Model-independent extraction of dynamical information from powder diffraction data

Physical Review B American Physical Society (APS) 72:21 (2005) 214304

Authors:

Andrew L Goodwin, Matthew G Tucker, Elizabeth R Cope, Martin T Dove, David A Keen

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David Keen

Sub department

SXD – the single‐crystal diffractometer at the ISIS spallation neutron source

Authors:

Magnetic Structure of MnO at 10 K from Total Neutron Scattering Data

Authors:

Abstract:

High-temperature, structural disorder, phase transitions, and piezoelectric properties of GaPO4

Authors:

Negative Thermal Expansion inZrW2O8: Mechanisms, Rigid Unit Modes, and Neutron Total Scattering

Authors:

Model-independent extraction of dynamical information from powder diffraction data

Authors:

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David Keen

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SXD – the single‐crystal diffractometer at the ISIS spallation neutron source

Authors:

Magnetic Structure of MnO at 10 K from Total Neutron Scattering Data

Authors:

Abstract:

High-temperature, structural disorder, phase transitions, and piezoelectric properties of GaPO4

Authors:

Negative Thermal Expansion inZrW2O8: Mechanisms, Rigid Unit Modes, and Neutron Total Scattering

Authors:

Model-independent extraction of dynamical information from powder diffraction data

Authors:

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