Switching of ferrotoroidal domains via an intermediate mixed state in the multiferroic Y-type hexaferrite Ba_0.5Sr_1.5Mg₂Fe₁₂O₂₂

2023/08/29 by Chen, Jiahao, Chmiel, Francis, Liu, Jieyi +3
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el)

paper · doi:10.48550/arxiv.2308.15335

Abstract

We report a detailed study of the magnetic field switching of ferrotoroidal/multiferroic domains in the Y-type hexaferrite compound Ba_0.5Sr_1.5Mg₂Fe₁₂O₂₂. By combining data from SQUID magnetometry, magneto-current measurements, and resonant X-ray scattering experiments, we arrive at a complete description of the deterministic switching, which involves the formation of a temperature-dependent mixed state in low magnetic fields. This mechanism is likely to be shared by other members of the hexaferrite family, and presents a challenge for the development of high-speed read-write memory devices based on these materials.

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