Magnetization reversal and anisotropic magnetoresistance behavior in bicomponent antidot nanostructures

Tripathy, D.; Vavassori, P.; Porro, José María; Adeyeye, A. O.; Singh, Navab

doi:10.1063/1.3474802

Cited by 27 publications

(19 citation statements)

References 14 publications

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“…In effect, the use of self-organized ordered nanoporous alumina membranes as templates has allowed the fabrication of magnetic antidots films with high hexagonal order and controlled pores distribution [9]. Magnetic antidots are a topic of intense current research since they are promising candidates for high-density information storage as well as a very exciting topic in fundamental physics [10,11,12,13,14,15,16,17].…”

Section: Introductionmentioning

confidence: 99%

Tailoring the magnetic properties of cobalt antidot arrays by varying the pore size and degree of disorder

Michea¹,

Palma²,

Lavín³

et al. 2014

J. Phys. D: Appl. Phys.

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Abstract.We study the influence of the porosity on the domain structure of cobalt antidots thin films with controlled and circular defects of 20, 40 and 60 nm of diameter. Micromagnetic simulations, combined with First-order reversal curves analysis of classical magnetometry measurements, have been used to track the evolution of the magnetic domain configurations. The found coercivity enhancement with the increase of the pore diameter is correlated to the domain reversibility. Moreover, we found that when the pores diameter increases the domain-domain interactions become dominant.

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Section: Introductionmentioning

confidence: 99%

Tailoring the magnetic properties of cobalt antidot arrays by varying the pore size and degree of disorder

Michea¹,

Palma²,

Lavín³

et al. 2014

J. Phys. D: Appl. Phys.

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“…The antidot lattice (ADL) has also been proposed as a competitor for high density storage media, with characteristics of high stability, while avoiding the superparamagnetic limit [4]. The effects of antidot's shape (square, circular, elliptical), size, interspacing distance and arrangement (square, honeycomb or rhombic lattices) on statics (magnetization reversal) and dynamics of magnetization (spin waves) have been carried out by different techniques [5,6].…”

Section: Introductionmentioning

confidence: 99%

Anisotropy of magnetic properties in 2D arrays of permalloy antidots

Kolmychek

Krutyanskiy

Gusev

et al. 2016

Journal of Magnetism and Magnetic Materials

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“…This has become possible because of reliable and feasible fabrication methods (both top-down and bottom-up approaches) making it more convenient to perform and enhance research activities. [5][6][7][8][9][10] In fact, the fabrication techniques and the variety of characterization and analytical methods, such as magnetic-force microscopy (MFM), scanning Kerr microscopy, Lorentz transmission-electron microscopy, vibratingsample magnetometry, superconducting quantum-interference device (SQUID), magneto-optical Kerr effects (MOKE), and micromagnetic simulations, have allowed for easier and more comprehensive magnetic studies in such system. [11][12][13][14][15] Although many works have concentrated on single-layer MAL systems, interest in the patterned magnetic multi/bilayer systems has increased rapidly due to their many interesting properties, such as gaint magneto-resistance, perpendicular magnetic anisotropy, and capability of magnetooptical data storage.…”

Section: Introductionmentioning

confidence: 99%

Magnetization reversal mechanism of bilayered magnetic anti-dot lattices

Deshpande

Seo

Lee

et al. 2012

Journal of Applied Physics

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Articles you may be interested inModifications of magnetic anisotropy and magnetization reversal in [Co0.4 nm/Pd0.7 nm]50 multilayers induced by 10 keV-He ion bombardment Micropatterned ordered arrays of cobalt (Co) anti-dots on a uniform thin nickel (Ni) underlayer, known as bilayered magnetic anti-dot lattices (BMALs), were fabricated using photolithography and a controlled wet-etching process. The magnetization reversals in a rhomboid BMAL under the application of a field along 0 (i.e., easy axis) and 90 (i.e., hard axis) were investigated using field-dependent magnetic-force microscopy, and the angular dependence of squareness (M r /M s ) and coercivity (H c ) were studied using magneto-optical Kerr effects. Although the magnetic reversals were dominated by domain-wall motions or domain rotations, reflecting the easy and hard axis characteristics, various other complex reversal processes were also found that depends on the history of the field application. The angular dependence of M r /M s and H c in a BMAL system was completely different from that in a single-layer, Co magnetic anti-dot lattice. Interestingly, a unidirectional and uniaxial component representing the overall magnetic anisotropy was revealed in the BMAL system. The details of these complicated magnetization behaviors were investigated and elaborated.

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Magnetization reversal and anisotropic magnetoresistance behavior in bicomponent antidot nanostructures

Abstract: Lattice symmetry and magnetization reversal in micron-size antidot arrays in Permalloy film

Cited by 27 publications

References 14 publications

Tailoring the magnetic properties of cobalt antidot arrays by varying the pore size and degree of disorder

Tailoring the magnetic properties of cobalt antidot arrays by varying the pore size and degree of disorder

Anisotropy of magnetic properties in 2D arrays of permalloy antidots

Magnetization reversal mechanism of bilayered magnetic anti-dot lattices

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