Multiferroic M-type hexaferrites with a room-temperature conical state and magnetically controllable spin helicity.
作者： Y. Tokunaga , Y. Kaneko , D. Okuyama , S. Ishiwata , T. Arima
DOI: 10.1103/PHYSREVLETT.105.257201
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摘要: Magnetic and magnetoelectric (ME) properties have been studied for single crystals of Sc-doped M-type barium hexaferrites. Magnetization (M) neutron diffraction measurements revealed that by tuning Sc concentration a longitudinal conical state is stabilized up to above room temperatures. ME shown transverse magnetic field (H) can induce electric polarization (P) at lower temperatures the spin helicity nonvolatile endurable near transition temperature. It was also response (reversal or retention) P vector upon reversal M varies with In turn, this feature allows us control relation between vectors H
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