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Phase diagram and magnetic relaxation phenomena in Cu2OSeO3

DOI: 10.1103/PhysRevB.94.064418 DOI Help

Authors: F. Qian (Faculty of Applied Sciences, Delft University of Technology) , Heribert Wilhelm (Diamond Light Source) , A. Aqeel (Zernike Institute for Advanced Materials, University of Groningen) , T. T. M. Palstra (Zernike Institute for Advanced Materials, University of Groningen) , A. J. E. Lefering (Faculty of Applied Sciences, Delft University of Technology) , E. H. Brück (Faculty of Applied Sciences, Delft University of Technology) , C. Pappas (Faculty of Applied Sciences, Delft University of Technology)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 94 , PAGES 064418

State: Published (Approved)
Published: August 2016

Abstract: We present an investigation of the magnetic-field-temperature phase diagram of Cu2OSeO3 based on dc magnetization and ac susceptibility measurements covering a broad frequency range of four orders of magnitude, from very low frequencies reaching 0.1 Hz up to 1 kHz. The experiments were performed in the vicinity of Tc = 58.2 K and around the skyrmion lattice A phase. At the borders between the different phases the characteristic relaxation times reach several milliseconds and the relaxation is nonexponential. Consequently the borders between the different phases depend on the specific criteria and frequency used and an unambiguous determination is not possible.

Keywords: magnetism

Subject Areas: Physics


Technical Areas: Magnets