X-ray and neutron scattering

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Evaluation of a Comprehensive Integrated Workplace-Based Program to Reduce Occupational Musculoskeletal Injury and Its Associated Morbidity in a Large Hospital

Journal of Occupational and Environmental Medicine Wolters Kluwer 48:11 (2006) 1159-1165

Authors:

Maziar Badii, Dave Keen, Shicheng Yu, Annalee Yassi
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Experimental verification of the simulated performance of a compact supermirror focusing device

Physica B Condensed Matter Elsevier 385 (2006) 1240-1242

Authors:

David A Keen, Robert M Dalgliesh, Matthias J Gutmann, John RP Webster
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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
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Local matrix-cluster interactions in a phase separated perovskite

Physical Review B Condensed Matter and Materials Physics 74:10 (2006)

Authors:

SR Giblin, I Terry, D Prabhakaran, AT Boothroyd, J Wu, C Leighton

Abstract:

Magnetoelectronic phase separation plays an integral part in many recent advances in the understanding of correlated electron systems. We have studied the magnetically phase separated material La1-x Srx Co O3 and observe unambiguous evidence of magnetic interactions between hole-rich ferromagnetic clusters and the neighboring hole poor matrix. We suggest that this mechanism detected here plays an important role in the rich electrical and magnetic properties of La1-x Srx Co O3. © 2006 The American Physical Society.
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High-pressure structure of LaSr2Mn2O7 bilayer manganite

Journal of Physics and Chemistry of Solids 67:9-10 (2006) 2046-2050

Authors:

RS Kumar, D Prabhakaran, A Boothroyd, MF Nicol, A Cornelius

Abstract:

The structure of bilayer manganite LaSr2Mn2O7 has been investigated under high pressure using synchrotron and laboratory X-rays in the angle-dispersive X-ray diffraction geometry up to 35 GPa at ambient temperature. The Rietveld refinement results of the powder diffraction data show a crossover between the axial and equatorial Mn-O bond length values and a significant suppression of Jahn-Teller (JT) distortion around 16 GPa. Our results imply that a re-entrant behavior in LaSr2Mn2O7, which shows equality in all the three Mn-O bond length values around 16 GPa similar to ambient conditions, may dramatically alter the orbital ordering. Further, the P-V data for the bilayer compounds indicate that the additional substitution of La3+ for Sr2+ lowers the bulk modulus and enhances lattice softening. © 2006 Elsevier Ltd. All rights reserved.
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