Open AccessКонкуренция доменных стенок и фазы обратной намагниченности в магнитной релаксации спинового переключателя Pt/Co/Ir/Co/Pt
Author(s) -
Р. Б. Моргунов,
G. L. L’vova,
A. Hamadeh,
S. Mangin
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.01.45291.143
Subject(s) - magnetization , nucleation , relaxation (psychology) , condensed matter physics , domain wall (magnetism) , heterojunction , materials science , magnetic domain , magnetic relaxation , chemistry , magnetic field , physics , psychology , social psychology , organic chemistry , quantum mechanics
A multilayer Pt/Co/Ir/Co/Pt/GaAs heterostructures demonstrates a long term (to several hours) magnetic relaxation between two stable states of the magnetization of the system. The magnetization reversal of the heterostructure layers occurs both due to the formation of nuclei of the reverse magnetization domains and as a result of their further growth by means of motion of domain walls. The competition between two these processes provides a nonexponential character of the magnetic relaxation. At 300 K, the contributions of these processes to the relaxation are commensurable, while, at temperatures lower than 200 K, the contribution of the nucleation is suppressed and the magnetic relaxation occurs as a result of motion of the domain walls.