scholarly journals Self-organization and magnetic domain microstructure of Fe nanowire arrays

2006 ◽  
Vol 99 (8) ◽  
pp. 08S502 ◽  
Author(s):  
N. Rougemaille ◽  
A. K. Schmid
Keyword(s):  
Magnetic Domain ◽  
Nanowire Arrays ◽  
Self Organization

scholarly journals Formation of Highly Ordered Platinum Nanowire Arrays on Silicon via Laser-Induced Self-Organization

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 1031
Author(s):  
Michael Dasbach ◽  
Hendrik M. Reinhardt ◽  
Norbert A. Hampp
Keyword(s):  
Thin Films ◽  
Nanowire Arrays ◽  
Surface Structures ◽  
Self Organization ◽  
Periodic Patterns ◽  
Periodic Surface ◽  
Platinum Nanowires ◽  
Nanosecond Pulsed Laser ◽  
Sputter Deposited ◽  
20 Nm

Laser-induced periodic surface structures (LIPSS) provide an elegant solution for the generation of highly ordered periodic patterns on the surface of solids. In this study, LIPSS are utilized for the formation of periodic platinum nanowire arrays. In a process based on laser-stimulated self-organization, platinum thin films, sputter-deposited onto silicon, are transformed into nanowire arrays with an average periodicity of 538 nm. The width of the platinum nanowires is adjustable in a range from 20 nm to 250 nm by simply adjusting the thickness of the initial platinum thin films in a range from 0.3 nm to 4.3 nm. With increasing width, platinum nanowires show a rising tendency to sink into the surface of the silicon wafer, thus indicating alloying between platinum and silicon upon LIPSS-formation by a nanosecond-pulsed laser. The Pt/silicon wires may be etched away, leaving a complementary nanostructure in the silicon surface.

scholarly journals Two-Step Magnetization Reversal FORC Fingerprint of Coupled Bi-Segmented Ni/Co Magnetic Nanowire Arrays

Nanomaterials ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 548 ◽  
Author(s):  
Javier García Fernández ◽  
Víctor Vega Martínez ◽  
Andy Thomas ◽  
Víctor de la Prida Pidal ◽  
Kornelius Nielsch
Keyword(s):  
Magnetization Reversal ◽  
Nanowire Array ◽  
Magnetic Domain ◽  
Magnetic Behavior ◽  
Relative Difference ◽  
Nanowire Arrays ◽  
Magnetic Interactions ◽  
Magnetic Configuration ◽  
Reversal Process ◽  
Magnetization Reversal Process

First Order Reversal Curve (FORC) analysis has been established as an appropriate method to investigate the magnetic interactions among complex ferromagnetic nanostructures. In this work, the magnetization reversal mechanism of bi-segmented nanowires composed by long Co and Ni segments contacted at one side was investigated, as a model system to identify and understand the FORC fingerprint of a two-step magnetization reversal process. The resulting hysteresis loop of the bi-segmented nanowire array exhibits a completely different magnetic behavior than the one expected for the magnetization reversal process corresponding to each respective Co and Ni nanowire arrays, individually. Based on the FORC analysis, two possible magnetization reversal processes can be distinguished as a consequence of the ferromagnetic coupling at the interface between the Ni and Co segments. Depending on the relative difference between the magnetization switching fields of each segment, the softer magnetic phase induces the switching of the harder one through the injection and propagation of a magnetic domain wall when both switching fields are comparable. On the other hand, if the switching fields values differ enough, the antiparallel magnetic configuration of nanowires is also possible but energetically unfavorable, thus resulting in an unstable magnetic configuration. Making use of the different temperature dependence of the magnetic properties for each nanowire segment with different composition, one of the two types of magnetization reversal is favored, as demonstrated by FORC analyses.

Ion-beam-directed self-organization of conducting nanowire arrays

2001 ◽  
Vol 63 (23) ◽  
Author(s):  
M. Batzill ◽  
F. Bardou ◽  
K. J. Snowdon
Keyword(s):  
Ion Beam ◽  
Nanowire Arrays ◽  
Self Organization

Magnetic domain structure in small diameter magnetic nanowire arrays

2005 ◽  
Vol 239 (3-4) ◽  
pp. 279-284 ◽  
Author(s):  
Dong-Huan Qin ◽  
Hao-Li Zhang ◽  
Cai-Ling Xu ◽  
Tao Xu ◽  
Hu-Lin Li
Keyword(s):  
Domain Structure ◽  
Small Diameter ◽  
Magnetic Domain ◽  
Nanowire Arrays ◽  
Magnetic Domain Structure ◽  
Magnetic Nanowire

Avalanches and self-organization in cellular magnetic-domain patterns

1990 ◽  
Vol 64 (18) ◽  
pp. 2168-2171 ◽  
Author(s):  
K. L. Babcock ◽  
R. M. Westervelt
Keyword(s):  
Magnetic Domain ◽  
Self Organization

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

2014 ◽  
Vol 215 ◽  
pp. 298-305 ◽  
Author(s):  
Alexander S. Samardak ◽  
Alexey V. Ognev ◽  
Ekaterina V. Sukovatitsina ◽  
Maxim E. Stebliy ◽  
Evgeny B. Modin ◽  
...  
Keyword(s):  
Magnetization Reversal ◽  
Magnetic Domain ◽  
Magnetic Behavior ◽  
Nanowire Arrays ◽  
Structural Defects ◽  
Domain Pattern ◽  
Magnetostatic Interaction ◽  
Nanoporous Alumina ◽  
Nanoporous Alumina Templates ◽  
Reversal Mechanism

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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