DocumentCode :
72662
Title :
Effect of 
-Particle Irradiation on the Magnetic Properties of Ni Nanowires
Author :
Singh, A.K. ; Das, Biswajit ; Sen, Pintu ; Bandopadhyay, Sujit Kumar ; Mandal, Kalyan
Author_Institution :
Dept. of Condensed Matter Phys. & Mater. Sci., S.N. Bose Nat. Centre for Basic Sci., Kolkata, India
Volume :
50
Issue :
11
fYear :
2014
fDate :
Nov. 2014
Firstpage :
1
Lastpage :
4
Abstract :
We report the effect of α-particle irradiation on the magnetic properties of nickel (Ni) nanowires (NWs) arrays with diameter of each NW ~100 nm prepared by electrodeposition using anodic alumina oxide (AAO) membranes. Different doses of α-particles irradiation, up to 2 × 1016α/cm2 were used to observe the effect. Structural characterization indicates the reduction in crystallinity of Ni NWs after irradiation. Coercivity (Hc) was found to increase with α-particle dose due to the formation of pinning centers. The magnetic easy axis changed direction from in-plane (with AAO template) to the out-of-plane due to the decrease in magnetocrystalline anisotropy by α-particle irradiation. Furthermore, the effect of α-particle irradiation on Ni NWs was studied by magnetic Barkhausen noise measurements.
Keywords :
Barkhausen effect; alpha-particle effects; coercive force; crystal structure; electrodeposition; magnetic anisotropy; nanofabrication; nanomagnetics; nanowires; nickel; α-particle irradiation; Ni; anodic alumina oxide membranes; coercivity; crystallinity; electrodeposition; magnetic Barkhausen noise measurements; magnetic properties; magnetocrystalline anisotropy; nickel nanowire arrays; pinning centers; structural properties; Anisotropic magnetoresistance; IP networks; Magnetostatics; Nickel; Perpendicular magnetic anisotropy; Radiation effects; (alpha) -particle irradiation; electrodeposition; magnetic properties; nickel (Ni) nanowires (NWs);
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2014.2322575
Filename :
6971728
Link To Document :
