Tuning the magnetodynamic properties of all-perpendicular spin valves using He+ irradiation | Zendy

Sheng Jiang | Zendy; Sunjae Chung | Zendy; L. Herrera Diez | Zendy; Tuan Quang Le | Zendy; Fredrik Magnusson | Zendy; D. Ravelosona | Zendy; Johan Åkerman | Zendy

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Tuning the magnetodynamic properties of all-perpendicular spin valves using He+ irradiation

Author(s) -

Sheng Jiang,

Sunjae Chung,

L. Herrera Diez,

Tuan Quang Le,

Fredrik Magnusson,

D. Ravelosona,

Johan Åkerman

Publication year - 2018

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.5024472

Subject(s) - fluence , perpendicular , irradiation , materials science , spin valve , ferromagnetism , condensed matter physics , anisotropy , ion , magnetic anisotropy , nuclear magnetic resonance , magnetic field , magnetization , optics , chemistry , physics , nuclear physics , geometry , mathematics , organic chemistry , quantum mechanics

Using He+ ion irradiation, we demonstrate how the magnetodynamic properties of both ferromagnetic layers in all-perpendicular [Co/Pd]/Cu/[Co/Ni] spin valves can be tuned by varying the He+ ion fluence. As the perpendicular magnetic anisotropy of both layers is gradually reduced by the irradiation, different magnetic configurations can be achieved from all-perpendicular, through orthogonal, to all in-plane. In addition, both the magnetic damping and the inhomogeneous broadening of the Co/Ni layer improve substantially with increasing fluence. GMR of the spin valve is negatively affected and decreases linearly from an original value of 1.14% to 0.4% at the maximum fluence of 50*10^14 He+/cm^2.

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