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Spin-phonon coupling, high-pressure phase transitions, and thermal expansion of multiferroic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>GaFeO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>: A combined first principles and inelastic neutron scattering study
We have carried out an extensive phonon study on multiferroic ${\mathrm{GaFeO}}_{3}$ to elucidate its dynamical behavior. Inelastic neutron scattering measurements are performed over a wide temperature range, 150 to 1198 K. First principles lattice dynamical calculations are done for the sake of the analysis and interpretation of the observations. The …