Controlled motion of domain walls in submicron amorphous wires | Zendy

M. Ţibu | Zendy; M. Lostun | Zendy; D. A. Allwood | Zendy; Cristian Rotărescu | Zendy; Alexandru Atiţoaie | Zendy; Nicoleta Lupu | Zendy; T.-A. Óvári | Zendy; H. Chiriac | Zendy

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Controlled motion of domain walls in submicron amorphous wires

Author(s) -

M. Ţibu,

M. Lostun,

D. A. Allwood,

Cristian Rotărescu,

Alexandru Atiţoaie,

Nicoleta Lupu,

T.-A. Óvári,

H. Chiriac

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4944075

Subject(s) - nucleation , materials science , amorphous solid , domain wall (magnetism) , amorphous metal , quenching (fluorescence) , focused ion beam , displacement (psychology) , composite material , conical surface , nanowire , magnetic field , optics , nanotechnology , ion , crystallography , physics , magnetization , chemistry , psychology , alloy , quantum mechanics , fluorescence , thermodynamics , psychotherapist

Results on the control of the domain wall displacement in cylindrical Fe77.5Si7.5B15 amorphous glass-coated submicron wires prepared by rapid quenching from the melt are reported. The control methods have relied on conical notches with various depths, up to a few tens of nm, made in the glass coating and in the metallic nucleus using a focused ion beam (FIB) system, and on the use of small nucleation coils at one of the sample ends in order to apply magnetic field pulses aimed to enhance the nucleation of reverse domains. The notch-based method is used for the first time in the case of cylindrical ultrathin wires. The results show that the most efficient technique of controlling the domain wall motion in this type of samples is the simultaneous use of notches and nucleation coils. Their effect depends on wire diameter, notch depth, its position on the wire length, and characteristics of the applied pulse

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