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Direct observation of noncollinear order of Co and Mn moments in multiferroic Mn0.85Co0.15WO4

DOI: 10.1103/PhysRevB.91.220403 DOI Help

Authors: J. Herrero-Martin (ALBA Synchrotron Light Facility) , A. N. Dobrynin (Diamond Light Source) , C. Mazzoli (Politecnico di Milano) , P. Steadman (Diamond Light Source) , P. Bencok (Diamond Light Source) , R. Fan (Diamond Light Source) , A. A. Mukhin (Russian Academy of Science) , V. Skumryev (Universitat Autònoma de Barcelona) , J. L. García-Muñoz (Institut de Ciència de Materials de Barcelona)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 91 (22)

State: Published (Approved)
Published: June 2015

Abstract: Doping Mn1−xCoxWO4 with Co produces a rich magnetic phase diagram with a large number of ferroelectric phases. We present resonant x-ray magnetic scattering experiments in the known collinear AF4 phase of multiferroic Mn0.85Co0.15WO4 showing that Mn and Co spins point to different directions despite they randomly occupy the same crystallographic site. The resultant noncollinear exotic spin configuration is determined by a competition of Mn2+ and Co2+ magnetic anisotropies and demands a reexamination of the ferroelectric phase diagram of this model family beyond the previous average description of its magnetic orders.

Diamond Keywords: Ferroelectricity; Antiferromagnetism

Subject Areas: Physics, Materials

Instruments: I10-Beamline for Advanced Dichroism

Added On: 04/07/2015 20:44

Discipline Tags:

Quantum Materials Multiferroics Physics Magnetism Materials Science

Technical Tags:

Scattering Resonant Soft X-ray Scattering (RSXS)