Abstract
Raman scattering spectra of bulk BiFeO 3 single crystals have been measured in the temperature range of 4–1200 K. All Raman active phonon modes predicted by the group theory were observed at 4 K and assigned by a polarized measurement. Moreover, we have found drastic changes of Raman spectra at 600–700 and 1000–1100 K. These changes were discussed in combination with magnetic ordering and structural phase transition.
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