Tailoring the magnetic properties of ordered 50-nm-diameter CoNi nanowire arrays

Pereira, Alejandro; Gallardo, Cécilia; Espejo, A. P.; Briones, Joel; Vivas, L. G.; Vázquez, M.; Denardin, Juliano C.; Escrig, Juan

doi:10.1007/s11051-013-2041-3

Cited by 31 publications

(23 citation statements)

References 46 publications

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“…The magnetism of individual nanowires is determined by the balance between that intrinsic shape anisotropy and other magnetic anisotropy energy terms such as magnetocrystalline or magnetoelastic [6][7][8]. Consequently, the tailoring of such anisotropy contributions enables the tuning of the magnetization easy axis of the system between the longitudinal and perpendicular directions with respect to the nanowire axis.…”

Section: Introductionmentioning

confidence: 99%

“…Particularly, the pH-controlled electroplating enables the switching between fcc and hcp-Co crystal phases, which modifies the magnetization easy axis from parallel to perpendicular to the wires [16]. Furthermore, the magnetic properties of Co nanowires can be also tuned by alloying with other metals (for example, the alloying with Ni results in an enhancement of the longitudinal uniaxial anisotropy) [8,17,18].…”

Section: Introductionmentioning

confidence: 99%

“…The applicability of any mode depends on the geometrical characteristics. Analytical calculations have been applied particularly in the case of the angular dependence of coercivity for several nanowire compositions but always to be compared with experimental data at room temperature [8,16,[26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Angular dependence of coercivity with temperature in Co-based nanowires

Bran

Espejo

Palmero

et al. 2015

Journal of Magnetism and Magnetic Materials

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Angular dependence of coercivity with temperature in Co-based nanowires

Bran

Espejo

Palmero

et al. 2015

Journal of Magnetism and Magnetic Materials

Self Cite

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“…[1][2][3][4][5][6] Besides their potential applications in high density magnetic storage media, high quality magnetic field sensors, electrochemical detectors, and magnetoresistance devices are of particular interest. [6][7][8][9][10][11] In this direction, the giant magnetoresistance (GMR) and magneto-thermopower properties of single and multi-segmented ANWs with varied alloy compositions have recently been investigated.…”

Section: Introductionmentioning

confidence: 99%

Unraveling the roles of thermal annealing and off-time duration in magnetic properties of pulsed electrodeposited NiCu nanowire arrays

Jamali

Kashi

Ramazani

et al. 2015

Journal of Applied Physics

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Structural and magnetic characterization of as-prepared and annealed FeCoCu nanowire arrays in ordered anodic aluminum oxide templates Magnetic alloy nanowires (ANWs) have long been studied owing to both their fundamental aspects and possible applications in magnetic storage media and magnetoresistance devices. Here, we report on the roles of thermal annealing and duration of off-time between pulses (t off ) in crystalline characteristics and magnetic properties of arrays of pulsed electrodeposited NiCu ANWs (35 nm in diameter and a length of 1.2 lm), embedded in porous anodic alumina template. Increasing t off enabled us to increase the Cu content thereby fabricating NiCu ANWs with different crystallinity and alloy compositions. Although major hysteresis curve measurements showed no considerable change in magnetic properties before and after annealing, the first-order reversal curve (FORC) analysis provided new insights into the roles of thermal annealing and t off . In other words, FORC diagrams indicated the presence of low and high coercive field regions in annealed Ni-rich ANWs, coinciding with the increase in t off in as-deposited ANWs. The former has a small coercivity with strong demagnetizing magnetostatic interactions from neighboring NWs and may correspond to a soft magnetic phase. The latter has a greater coercivity with weak interactions, corresponding to a hard magnetic phase. On the other hand, for as-deposited and annealed Cu-rich NiCu ANWs, a mixed phase of the soft and hard segments could be found. Furthermore, a transition from the interacting Ni-rich to non-interacting Cu-rich ANWs took place with a magnetic field applied parallel to the NW axis. Thus, these arrays of ANWs with tunable magnetic phases and interactions may have potential applications in the nanoscale devices. V C 2015 AIP Publishing LLC.

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“…A fur ther increase in the recording density calls for the development of materials containing ordered arrays of anisotropic magnetic particles. The most promising method of forming such nanostructures on a large area is via self organization processes [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Polarized-neutron scattering from an array of magnetic nanowires embedded into a nonmagnetic matrix

Iashina

Grigoryeva

Dubitskiy

et al. 2015

J. Synch. Investig.

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Neutron scattering from spatially ordered arrays of magnetic nanowires synthesized inside a non magnetic matrix is theoretically described. Expressions for the nuclear, magnetic, and interference contribu tions to the neutron scattering cross section are obtained. It is shown that, when polarized neutrons are scat tered from an array of magnetic nanowires, the scattering cross section is not only a nonlinear function of the nanowire length but also depends on the neutron wavelength. These expressions describe the complex nature of the neutron diffraction pattern as a factor of the ratio of nuclear and magnetic scattering amplitudes.Keywords: small angle polarized neutron scattering, magnetic properties of anisotropic nanoparticles, spa tially ordered arrays of magnetic nanowires

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Tailoring the magnetic properties of ordered 50-nm-diameter CoNi nanowire arrays

Cited by 31 publications

References 46 publications

Angular dependence of coercivity with temperature in Co-based nanowires

Angular dependence of coercivity with temperature in Co-based nanowires

Unraveling the roles of thermal annealing and off-time duration in magnetic properties of pulsed electrodeposited NiCu nanowire arrays

Polarized-neutron scattering from an array of magnetic nanowires embedded into a nonmagnetic matrix

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