The magnetoelectric effect and double‐perovskite structure | Zendy

Bahoosh Safa Golrokh | Zendy; Wesselinowa Julia M. | Zendy; Trimper Steffen | Zendy

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The magnetoelectric effect and double‐perovskite structure

Author(s) -

Bahoosh Safa Golrokh,

Wesselinowa Julia M.,

Trimper Steffen

Publication year - 2012

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.201248059

Subject(s) - condensed matter physics , multiferroics , phonon , magnetization , coupling (piping) , polarization (electrochemistry) , magnetoelectric effect , magnetic field , materials science , phase transition , phase (matter) , physics , ferroelectricity , chemistry , quantum mechanics , dielectric , optoelectronics , metallurgy

Based on a microscopic model with a biquadratic magnetoelectric coupling the properties of Bi 2 NiMnO 6 thin films are investigated. Using Green's functions the phonon spectrum is calculated which is determined by the polarization and the magnetization. The phonon energy and its damping offer a kink at the magnetic phase transition temperature. The phonon energy is enhanced if an external magnetic field is increased, whereas, the damping of the phonons decreases. The observed behavior is a strong evidence for a magnetoelectric coupling. The relevance of our approach for other multiferroics is discussed.

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