Magnetic Behavior of Single Ni Nanowires and its Arrays Embedded in Highly Ordered Nanoporous Alumina Templates

Alexander S. Samardak; Alexey V. Ognev; Ekaterina V. Sukovatitsina; Maxim E. Stebliy; Evgeny B. Modin; Liudmila A. Chebotkevich; R. Mahmoodi; M.G. Hosseini; S.M. Peighambari; Farzad Nasirpouri

doi:10.4028/www.scientific.net/SSP.215.298

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HomeSolid State PhenomenaSolid State Phenomena Vol. 215Magnetic Behavior of Single Ni Nanowires and its...

Magnetic Behavior of Single Ni Nanowires and its Arrays Embedded in Highly Ordered Nanoporous Alumina Templates

Abstract:

We report on magnetization reversal and geometry dependent magnetic anisotropy of Ni nanowire arrays electrodeposited in nanoporous alumina templates. Using micromagnetic simulation we have found that magnetization reversal mechanism in arrays with different nanowire diameters is curling. This magnetic behavior appears with propagation of the domain wall along a nanowire. The calculations have been proven by the analysis of hysteresis curves. To explain magnetic properties of closely-spaced nanowire arrays we have taken into consideration the magnetostatic interaction between adjacent nanowires and their structural defects, like as boundary grains. The investigated magnetic domain pattern of individual bended nanowires confirms rather complicated magnetization reversal mechanism than either coherent rotation of magnetization or its curling. Competition between the shape and magnetoelastic anisotropies can induce an unusual zigzag-like domain pattern in a single nanowire.

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Solid State Phenomena (Volume 215)

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298-305

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.215.298

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Online since:

April 2014

Authors:

Alexander S. Samardak*, Alexey V. Ognev, Ekaterina V. Sukovatitsina, Maxim E. Stebliy, Evgeny B. Modin, Liudmila A. Chebotkevich, R. Mahmoodi, M.G. Hosseini, S.M. Peighambari, Farzad Nasirpouri

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Magnetic Property, Magnetization Reversal, Nanoporous Materials, Nanowire

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