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摘要
Dc-susceptibility measurements and Raman active phonon frequencies of hexagonal DyMnO3 retrace the Mn3+ ions antiferromagnetic transition at T-N similar to 70 K and their spin reorientation at T-SR similar to 48 K. The temperature evolution of Raman active mode frequencies and their over-hardening are associated with Dy3+ and Mn3+ ion displacements below T-N and with a spin-phonon coupling that involves apical oxygen.
- 出版日期2013-2-13
