DocumentCode
86504
Title
Optimization of Domain Wall Oscillations in Magnetic Nanowires
Author
Demiray, A.S. ; Naganuma, H. ; Oogane, M. ; Ando, Y.
Author_Institution
Dept. of Appl. Phys., Tohoku Univ., Sendai, Japan
Volume
6
fYear
2015
fDate
2015
Firstpage
1
Lastpage
4
Abstract
By properly choosing material parameters and geometry of a magnetic nanowire, pinned domain wall oscillations at a local constriction can be obtained at low current densities. The thickness modulation of the wire gives an additional uniaxial magnetic anisotropy, which modifies the transverse anisotropy energy that defines the critical current density required for the onset of domain wall oscillations. Broadband microwave signals are obtained with these values of current density.
Keywords
magnetic anisotropy; magnetic domain walls; nanomagnetics; nanowires; broadband microwave signals; critical current density; local constriction; magnetic nanowires; pinned domain wall oscillations; thickness modulation; transverse anisotropy energy; uniaxial magnetic anisotropy; Analytical models; Critical current density (superconductivity); Nanowires; Oscillators; Perpendicular magnetic anisotropy; Wires; Microwave magnetics; magnetic anisotropy; magnetic domain walls; magnetic nanowires;
fLanguage
English
Journal_Title
Magnetics Letters, IEEE
Publisher
ieee
ISSN
1949-307X
Type
jour
DOI
10.1109/LMAG.2014.2379629
Filename
6981910
Link To Document