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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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Nature of the Magnetic Order in the Charge-Ordered Cuprate La$_{1.48}$Nd$_{0.4}$Sr$_{0.12}$CuO$_4$

(2006)

Authors:

NB Christensen, HM Ronnow, J Mesot, RA Ewings, N Momono, M Oda, M Ido, M Enderle, DF McMorrow, AT Boothroyd
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Synthesis, characterization and properties of alkali and earth-alkalisulfonates

Acta Crystallographica Section A: Foundations and advances International Union of Crystallography (IUCr) 62:a1 (2006) s211-s211

Authors:

H Pöllmann, S Stöber, Ch Wagner, K Merzweiler
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Erratum: Resonant soft x-ray scattering investigation of orbital and magnetic ordering in La0.5 Sr1.5 MnO4 (Physical Review B - Condensed Matter and Materials Phsics (2006) 71, (245102))

Physical Review B - Condensed Matter and Materials Physics 74:4 (2006)

Authors:

SB Wilkins, N Stojić, TAW Beale, N Binggeli, CWM Castleton, P Bencok, D Prabhakaran, AT Boothroyd, PD Hatton, M Altarelli
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Synthesis and Evaluation of a Low Pressure Drop Structured Catalyst for Use in the Reactive Distillation Process

Industrial & Engineering Chemistry Research American Chemical Society (ACS) 45:15 (2006) 5268-5273

Authors:

Stuart M Holmes, Andrew Boothroyd, Colin S Cundy, Arthur A Garforth, Christina Keilert, Gwyn A Mali, David MT Newsham, Graeme Torkington
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