TY - JOUR

T1 - Control of multiferroic order by magnetic field in frustrated helimagnet MnI2. Theory

AU - Utesov, O.

AU - Syromyatnikov, A.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - We provide a theoretical description of frustrated multiferroic MnI 2 with a spiral magnetic ordering in magnetic field h. We demonstrate that subtle interplay of exchange coupling, dipolar forces, hexagonal anisotropy, and the Zeeman energy account for the main experimental findings observed recently in this material (Kurumaji et al., Phys. Rev. Lett. 106 (2011) 167206). We describe qualitatively the non-trivial evolution of electric polarization P upon h rotation, changing P direction upon h increasing, and disappearance of ferroelectricity at h>h c, where h c is smaller than the saturation field.

AB - We provide a theoretical description of frustrated multiferroic MnI 2 with a spiral magnetic ordering in magnetic field h. We demonstrate that subtle interplay of exchange coupling, dipolar forces, hexagonal anisotropy, and the Zeeman energy account for the main experimental findings observed recently in this material (Kurumaji et al., Phys. Rev. Lett. 106 (2011) 167206). We describe qualitatively the non-trivial evolution of electric polarization P upon h rotation, changing P direction upon h increasing, and disappearance of ferroelectricity at h>h c, where h c is smaller than the saturation field.

KW - SUCCESSIVE PHASE-TRANSITIONS

UR - http://www.scopus.com/inward/record.url?scp=85057437632&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2018.11.099

DO - 10.1016/j.jmmm.2018.11.099

M3 - статья

VL - 475

SP - 98

EP - 102

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

ER -