Open AccessСпин-переориентационный переход в микропроводах alpha-Fe с аморфной оболочкой PrDyCoFeB
Author(s) -
О. В. Коплак,
Е.В. Дворецкая,
Д. В. Королев,
Р. А. Валеев,
В. П. Пискорский,
А.С. Денисова,
Р. Б. Моргунов
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.08.49599.060
Subject(s) - condensed matter physics , ferrimagnetism , magnetization , materials science , phase transition , spin glass , magnetic field , magnetic anisotropy , anisotropy , physics , quantum mechanics
A spin-reorientation transition accompanied by a decrease in the longitudinal magnetization of α-Fe/PrDyCoFeB microwires was observed at 245 K in zero magnetic field. An increase of the magnetic field at which the microwire is heated from 2 K leads to a significant shift of the transition temperature from 245K at 0 T to 70 K at 1 T. In the perpendicular direction, the change in magnetization at the critical transition temperature is almost absent. Jumps of the magnetic anisotropy and magnetic susceptibility are observed in low fields at a critical temperature. The magnetic phase transition is due to a transition between the ferrimagnetic state of the PrDyCoFeB shell at high temperatures and the state of Ising spin glass at low temperatures.