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- W2003154564 abstract "The phonon properties of hexagonal multiferroic RMnO3 materials are studied using a Green's function technique. The calculations are performed on the basis of the Heisenberg and the transverse Ising model taking into account anharmonic spin–phonon and phonon–phonon interaction terms. The strong spin–phonon interaction leads to an anomaly in the phonon energy and the damping around the magnetic and ferroelectric phase transitions. The phonon spectrum is discussed for different exchange, magnetoelectric and spin–phonon interaction constants. It is shown that the phonon energy depends on the radius of the rare earth ion rR. The influence of an applied magnetic field on the phonon spectrum is studied, too. The predictions are consistent with experimental results." @default.
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- W2003154564 date "2007-08-31" @default.
- W2003154564 modified "2023-10-07" @default.
- W2003154564 title "Theoretical study of the phonon spectra of hexagonal multiferroics RMnO<sub>3</sub>" @default.
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- W2003154564 doi "https://doi.org/10.1088/0953-8984/19/38/386218" @default.
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