Exchange Bias at the Ferro–Ferrimagnet Interface in PrDyCoFeB/α-Fe Microwiresстатья
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Дата последнего поиска статьи во внешних источниках: 8 июня 2022 г.
Аннотация:The exchange bias 50–70 Oe has been observed in two-components microwires of two types: (i) with an α-Fe shell deposited on a nanocrystalline PrDyCoFeB core and (ii) with nanocrystalline Pr-DyCoFeB shell and α-Fe core formed spontaneously during melt solidification. In this case, the exchange bias is not observed in microcrystalline microwires consisting mainly of the (PrDy)2(CoFe)14B phase coated with α-Fe. Since the nanocrystalline microwires contain, in addition to this phase, also ferromagnetic Dy(CoFe)2 or Dy(CoFe)4B phases, the appearance of the exchange bias is explained by the existence of the α-Fe interface with these phases.