Vibronic Magnetoelectric Effects in the Bi-Based Multiferroics

• Authors: P. Konsin , B. Sorkin
• Languages of publication: EN

Abstracts

EN

The detailed magneto-electron-lattice (vibronic) theory of ferroelectricity in the Bi-based multiferroics (BiFeO₃ etc.) is developed further. The vibronic admixture of the empty oxygen 2p states to the Bi 6s lone electron pair state leads to ferroelectricity. These interactions are the driving and restoring forces of the structural phase transformations of the Bi-based multiferroics. The free energy of the BiFeO₃-type multiferroics with the ferroelectric and the G-type antiferromagnetic phase transitions are derived. The Zeeman splitting and spin-transversal optical phonon couplings are also important.

Keywords

EN

63.20.kd; 77.84.-s; 77.80.Bh; 77.80.-e

Discipline

• 77.84.-s: Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials(for nonlinear optical materials, see 42.70.Mp; for dielectric materials in electrochemistry, see 82.45.Un)
• 63.20.kd: Phonon-electron interactions
• 77.80.-e: Ferroelectricity and antiferroelectricity

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 2
• Pages: 243-244

Dates

published

2015-02

Contributors

author

P. Konsin

• Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia

author

B. Sorkin

• Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia

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Identifiers

DOI

10.12693/APhysPolA.127.243