Neutron diffraction, magnetic, and magnetoelectric studies of phase transitions in multiferroic Mn0.90Co0.10WO4
Urcelay Olabarria, Irene (Institut Laue-Langevin)
Ressouche, Eric (Commissariat à l'Énergie Atomique et aux Énergies Alternatives (França))
Mukhin, A. A. (Institut obshcheĭ fiziki im. A.M. Prokhorova)
Ivanov, Vsevolod (Institut obshcheĭ fiziki im. A.M. Prokhorova)
Balbashov, A. M. (Moscow Power Engineering Institute)
Vorobev, G. P. (Moskovskiĭ gosudarstvennyĭ universitet im. M.V. Lomonosova)
Popov, Yu F. (Moskovskiĭ gosudarstvennyĭ universitet im. M.V. Lomonosova)
Kadomtseva, A. M. (Moskovskiĭ gosudarstvennyĭ universitet im. M.V. Lomonosova)
García-Muñoz, José Luis (Institut de Ciència de Materials de Barcelona)
Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física)

Date:	2012
Abstract:	We have studied various spontaneous and magnetic-field-induced phase transitions in single crystals of multiferroic Mn0. 9Co0. 1WO4 using magnetic and magnetoelectric measurements and neutron diffraction. Compared to pure MnWO4, our data consistently confirm that the anisotropic Co2+ ions induce reorientation of the spin cycloid structure to the ac plane and reveal Pa and Pc components of spontaneous electric polarization. Field-induced phase transitions accompanied by anomalies of magnetic susceptibility and suppression of both Pa and Pc polarizations have been observed for H∥c (∼3 T) and H∥a (∼8. 5 T). Neutron diffraction has revealed that in both cases the spin cycloid plane flops in direction almost perpendicular to H, i. e. , close to the ab and bc planes, respectively. Parameters describing the magnetic structures including wave vectors, orientations of the main elliptical axes, etc. , have been determined in all spontaneous and field-induced states.
Grants:	Ministerio de Ciencia e Innovación MAT2010-20616-C02-02 Ministerio de Ciencia e Innovación MATT2009-09308 Ministerio de Ciencia e Innovación CSD2007-00041
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Física de l'estat sòlid ; Magnetisme ; Superconductivitat
Published in:	Physical review B : condensed matter and materials physics, Vol. 85, Núm. 9 (March 2012) , p. 094436/1-094436/10, ISSN 1098-0121

DOI: 10.1103/PhysRevB.85.094436

10 p, 1.2 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Articles > Research articles
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