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- W3021152785 abstract "The spin wave resonances of BiFeO3 ceramics have been followed at low temperature through far-infrared reflectance measurements. Following the scheme of Fishman et al (2015 Phys. Rev. B 92 094422) we have been able to assign all the spin wave modes observed. A complete lifting of the degeneracies of all these modes is seen at 250 K concomitant with the increase in single-ion anisotropy. For the first time, all the spin wave modes have been observed in the infrared spectra of BiFeO3. Correlated changes in the strength and frequencies of spin wave excitations with the reported magnetic transitions at low temperature are observed. A simultaneous increase in anharmonicity of the magnetic cycloid and single-ion anisotropy with decreasing temperature results in a partial suppression of the spin wave excitations. An increase in the magnetoelectric coupling is also observed below 150 K." @default.
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- W3021152785 date "2020-07-06" @default.
- W3021152785 modified "2023-10-01" @default.
- W3021152785 title "Single-ion anisotropy driven splitting of spin wave resonances in BiFeO3 at low temperature" @default.
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- W3021152785 doi "https://doi.org/10.1088/1361-648x/ab913e" @default.
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