Dielectric and phonon properties of the multiferroic ferrimagnet Cu{sub 2}OSeO{sub 3}

Journal Article · Fri Feb 14 00:00:00 EST 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4865270· OSTI ID:22278079

Apostolova, I. N., E-mail: [e-mail] ^[1]

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1. University of Forestry, Faculty of Forest Industry, Kl. Ohridsky Blvd. 10, 1756 Sofia (Bulgaria)

We propose a microscopic model in order to study the multiferroic properties of Cu{sub 2}OSeO{sub 3} taking into account the ferrimagnetic interaction, frustration, linear magnetoelectric (ME) coupling, and anharmonic spin-phonon interaction. We have shown that the dielectric constant and the phonon energy and damping have a kink near the magnetic phase transition T{sub C} = 58 K which disappears with increasing of an external magnetic field. This behavior is an evidence for a strong ME coupling and in qualitative agreement with the experimental data.

• OSTI ID: 22278079
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER OXIDES
COUPLING
DAMPING
DIELECTRIC MATERIALS
FERRIMAGNETIC MATERIALS
FERRIMAGNETISM
MAGNETIC FIELDS
MAGNETIC PROPERTIES
PERMITTIVITY
PHASE TRANSFORMATIONS
PHONONS
SELENIUM OXIDES
SPIN