Per citar aquest document: http://ddd.uab.cat/record/107155
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. Service de Physique Statistique, Magnétisme et Supraconductivité)
Mukhin, A.A. (Institut obshcheĭ fiziki im. A.M. Prokhorova)
Ivanov, V. Yu (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)

Data: 2012
Resum: 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.
Drets: Tots els drets reservats
Llengua: Anglès
Document: article ; recerca ; publishedVersion
Matèria: Física de l'estat sòlid ; Magnetisme ; Superconductivitat
Publicat a: 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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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Grup de nanoenginyeria de materials, nanomagnetisme i nanomecànica (Gnm3)
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