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Electric-current-induced dynamics of bubble domains in a ferrimagnetic Tb/Co multilayer wire below and above the magnetic compensation point

Authors :
Masaaki Tanaka
Sho Sumitomo
Noriko Adachi
Syuta Honda
Hiroyuki Awano
Ko Mibu
Source :
AIP Advances, Vol 7, Iss 5, Pp 055916-055916-5 (2017)
Publication Year :
2017
Publisher :
AIP Publishing LLC, 2017.

Abstract

We investigated the electric-current-induced dynamics of bubble domains in a perpendicularly magnetized ferrimagnetic {Tb/Co}7 multilayer wire with a heavy-metal Pt cap layer. The {Tb/Co}7 wire with the transition-metal-dominant and rare-earth-dominant magnetizations was obtained by changing temperature. We found that the bubble domains moved to the electric current direction with growing in oblique angles when electric current pulses were applied. The oblique directions of the bubble-domain’s growth in the {Tb/Co}7 wire with the transition-metal-dominant and rare-earth-dominant magnetizations were opposite with each other. The micromagnetic simulations imply that these oblique growths are accounted by the spin injection from the Pt layer via the spin Hall effect.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226 and 04971892
Volume :
7
Issue :
5
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.9e205932da0497189283a32e6442966
Document Type :
article
Full Text :
https://doi.org/10.1063/1.4974067