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X-ray diffraction study of the temperature-induced structural phase transitions in SmVO3

Physical Review B - Condensed Matter and Materials Physics 85:22 (2012) 224102

Authors:

RD Johnson, CC Tang, IR Evans, SR Bland, DG Free, TAW Beale, PD Hatton, L Bouchenoire, D Prabhakaran, AT Boothroyd
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Evidence of Magnetic Correlations Among the Charge Stripe Electrons of Charge-Stripe Ordered La2NiO4.11

(2011)

Authors:

PG Freeman, SM Hayden, RA Mole, M Enderle, D Prabhakaran, AT Boothroyd
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Analysis of local chemical and structural inhomogeneities in FeySe1−xTex single crystals

Applied Physics Letters AIP Publishing 99:19 (2011) 192504

Authors:

SC Speller, TB Britton, G Hughes, S Lozano-Perez, AT Boothroyd, E Pomjakushina, K Conder, CRM Grovenor
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Femtoscale magnetically induced lattice distortions in multiferroic TbMnO3

(2011)

Authors:

HC Walker, F Fabrizi, L Paolasini, F de Bergevin, J Herrero-Martin, AT Boothroyd, D Prabhakaran, DF McMorrow
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Cu3Nb2O8: A multiferroic with chiral coupling to the crystal structure

Physical Review Letters 107:13 (2011)

Authors:

RD Johnson, S Nair, LC Chapon, A Bombardi, C Vecchini, D Prabhakaran, AT Boothroyd, PG Radaelli

Abstract:

By combining bulk properties, neutron diffraction, and nonresonant x-ray diffraction measurements, we demonstrate that the new multiferroic Cu 3Nb2O8 becomes polar simultaneously with the appearance of generalized helicoidal magnetic ordering. The electrical polarization is oriented perpendicularly to the common plane of rotation of the spins-an observation that cannot be reconciled with the conventional theory developed for cycloidal multiferroics. Our results are consistent with coupling between a macroscopic structural rotation, which is allowed in the paramagnetic group, and magnetically induced structural chirality. © 2011 American Physical Society.
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