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- W1989671057 abstract "The spectra of far-infrared transmission in ${text{Tb}}_{3}{text{Fe}}_{5}{text{O}}_{12}$ magnetoelectric single crystals have been studied in the range between 15 and $100text{ }{text{cm}}^{ensuremath{-}1}$, in magnetic fields up to 10 T, and for temperatures between 5 and 150 K. We attribute some of the observed infrared-active excitations to electric dipole transitions between ligand-field split states of ${text{Tb}}^{3+}$ ions. Anticrossing between the magnetic exchange excitation and the ligand-field transition occurs at the temperature between 60 and 80 K. The corresponding coupling energy for this interaction is $6text{ }{text{cm}}^{ensuremath{-}1}$. Temperature-induced softening of the hybrid IR excitation correlates with the increase in the static dielectric constant. We discuss the possibility for hybrid excitations of magnons and ligand-field states and their possible connection to the magnetoelectric effect in ${text{Tb}}_{3}{text{Fe}}_{5}{text{O}}_{12}$." @default.
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- W1989671057 date "2010-07-15" @default.
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- W1989671057 title "Coupling between magnon and ligand-field excitations in magnetoelectric<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mtext>Tb</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>Fe</mml:mtext></mml:mrow><mml:mn>5</mml:mn></mml:msub><mml:msub><mml:mtext>O</mml:mtext><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>garnet" @default.
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- W1989671057 doi "https://doi.org/10.1103/physrevb.82.014414" @default.
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