Thermal reduction of the threshold current density for current-induced domain wall motion in Tb-Co magnetic alloy wire | Zendy

Yuichiro Kurokawa | Zendy; Ryogo Yoshimura | Zendy; Satoshi Sumi | Zendy; Hiroyuki Awano | Zendy

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Thermal reduction of the threshold current density for current-induced domain wall motion in Tb-Co magnetic alloy wire

Author(s) -

Yuichiro Kurokawa,

Ryogo Yoshimura,

Satoshi Sumi,

Hiroyuki Awano

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4979727

Subject(s) - materials science , current (fluid) , current density , alloy , domain wall (magnetism) , reduction (mathematics) , condensed matter physics , magnetic domain , creep , magnetic field , metallurgy , thermodynamics , magnetization , physics , geometry , mathematics , quantum mechanics

We investigated the current-induced domain wall motion (CIDWM) in Pt (3 nm)/Tb0.34Co0.66 (6 nm) alloy wire at various temperatures (T). The threshold current density (Jth) for the CIDWM in the Tb-Co alloy wire was 0.85 × 1011 A/m2 at room temperature, and drastically decreased as T was increased. Particularly, at T = 343 K, Jth (= 0.13 × 1011 A/m2) was almost 7 times lower than that at room temperature. The reduction in Jth can be attributed to thermally activated creep motion and a reduction in the depinning current density. These results indicate that devices using CIDWM can be thermally assisted

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