Open AccessОбменное смещение на границе ферро-ферримагнетик в микропроводах PrDyCoFeB/α-Fe
Author(s) -
O.В. Коплак,
Е.В. Дворецкая,
Д.В. Королев,
Р.А. Валеев,
В.П. Пискорский,
М.В. Гапанович,
Ю.С. Погорелец,
Р.Б. Моргунов
Publication year - 2021
Publication title -
физика твердого тела
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2021.10.51399.112
Subject(s) - nanocrystalline material , ferrimagnetism , exchange bias , microcrystalline , materials science , phase (matter) , shell (structure) , condensed matter physics , crystallography , magnetization , chemistry , nanotechnology , composite material , magnetic anisotropy , magnetic field , physics , organic chemistry , quantum mechanics
An exchange bias of 50-70 Oe was found in two-component microwires of two types: 1) with an α-Fe shell covering a nanocrystalline PrDyCoFeB core and 2) with a PrDyCoFeB nanocrystalline shell and an α-Fe core spontaneously formed during the solidification of the melt. In this case, the exchange bias is not detected in α-Fe-coated microcrystalline microwires, which mainly consist of the (PrDy) 2 (CoFe) 14B phase. Since, in addition to this phase, nanocrystalline microwires contain ferrimagnetic phases Dy (CoFe) 2 or Dy (CoFe) 4B, the appearance of an exchange bias is explained by the presence of an α-Fe interface with these phases.
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