Open AccessГенерация неравновесных зародышей намагниченности в быстро нарастающем магнитном поле в синтетических ферримагнетиках Pt/Co/Ir/Co/Pt
Author(s) -
Р.Б. Моргунов,
А.И. Безверхний
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.11.50110.131
Subject(s) - ferrimagnetism , nucleation , condensed matter physics , magnetization , magnetic moment , non equilibrium thermodynamics , magnetic anisotropy , materials science , magnetic field , anisotropy , anisotropy energy , paramagnetism , physics , thermodynamics , quantum mechanics
In a Pt/Co/Ir/Co/Pt synthetic ferrimagnet with perpendicular magnetic anisotropy, stochastically occurring peak of magnetic moment was detected in the rapidly increasing magnetic field of 16 kOe / s sweep rate at T = 300 K. The peak arises at the coinciding switching fields between three equilibrium magnetization states. The reason of the peak is nucleation of the nonequilibrium magnetic domains in the vicinity of structural defects of the Co film, where diminished activation energy of magnetic nucleation takes place.