Magnetization reversal dependence on effective magnetic anisotropy in electroplated Co–Cu nanowire arrays

Arrays of Co(100−x)Cu(x) (0 ≤ x ≤ 27) nanowires with 45 nm of diameter and 18 μm in length, have been potentiostatically electrodeposited into the hexagonally self-assembled nanopores of anodic alumina membranes.

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Fabrication, characterization, and photoluminescence properties of highly ordered TiO2 nanowire arrays

Journal of Materials Research ◽

10.1557/jmr.2001.0157 ◽

2001 ◽

Vol 16 (4) ◽

pp. 1138-1144 ◽

Cited By ~ 50

Author(s):

Y. Lei ◽

L. D. Zhang

Keyword(s):

Anatase Phase ◽

Sol Gel ◽

Broad Band ◽

Anodic Alumina ◽

Nanowire Arrays ◽

Photoluminescence Properties ◽

Alumina Membrane ◽

Tio2 Nanowire ◽

Alumina Membranes ◽

Center Area

Highly ordered TiO2 nanowire arrays were prepared in anodic alumina membranes by a sol-gel method. The nanowires are single-crystalline anatase phase with uniform diameters around 50 nm. At room temperature, photoluminescence (PL) measurements of these TiO2 nanowire arrays showed a visible broad band with three peaks, which were located at about 425, 460, and 530 nm that are attributed to self-trapped excitons, F, and F+ centers, respectively. A model is also presented to explain the PL intensity drop-down of the TiO2 nanowire arrays embedded in the alumina membrane: the blue PL band of the anodic alumina membranes arises from the F+ centers on the pore walls, and the TiO2 nanowires first form in the center area of the pores and then extend to the pore walls.

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Diameter-Controllable Magnetic Properties of Co Nanowire Arrays by Pulsed Electrodeposition

Journal of Nanomaterials ◽

10.1155/2010/793854 ◽

2010 ◽

Vol 2010 ◽

pp. 1-4 ◽

Cited By ~ 5

Author(s):

Youwen Yang ◽

Yanbiao Chen ◽

Yucheng Wu ◽

Xiangying Chen ◽

Mingguang Kong

Keyword(s):

Magnetic Properties ◽

Crystal Structures ◽

Magnetization Reversal ◽

Nanowire Arrays ◽

Cylindrical Shape ◽

Perpendicular Anisotropy ◽

Alumina Membranes ◽

Pulsed Electrodeposition ◽

Different Diameters ◽

Co Nanowires

The Co nanowires with different diameters were prepared by pulsed electrodeposition into anodic alumina membranes oxide templates. The micrographs and crystal structures of nanowires were studied by FE-SEM, TEM, and XRD. Due to their cylindrical shape, the nanowires exhibit perpendicular anisotropy. The coercivity and loop squareness (Mr/Ms) of Co nanowires depend strongly on the diameter. Both coercivity and Mr/Ms decrease with increasing wire diameter. The behavior of the nanowires is explained briefly in terms of localized magnetization reversal.

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Antimony Nanowire Arrays Fabricated by Pulsed Electrodeposition in Anodic Alumina Membranes

Advanced Materials ◽

10.1002/1521-4095(20020903)14:17<1227::aid-adma1227>3.0.co;2-2 ◽

2002 ◽

Vol 14 (17) ◽

pp. 1227-1230 ◽

Cited By ~ 96

Author(s):

Y. Zhang ◽

G. Li ◽

Y. Wu ◽

B. Zhang ◽

W. Song ◽

...

Keyword(s):

Anodic Alumina ◽

Nanowire Arrays ◽

Alumina Membranes ◽

Pulsed Electrodeposition

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Manipulation of optical properties of Ag/Cu alloy nanowire arrays embedded in anodic alumina membranes

Applied Surface Science ◽

10.1016/j.apsusc.2007.12.006 ◽

2008 ◽

Vol 254 (13) ◽

pp. 3845-3848 ◽

Cited By ~ 7

Author(s):

Xiaoye Hu ◽

Zhenyang Wang ◽

Tianci Zhang ◽

Xiaoyan Zeng ◽

Wei Xu ◽

...

Keyword(s):

Optical Properties ◽

Anodic Alumina ◽

Nanowire Arrays ◽

Alumina Membranes ◽

Cu Alloy

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Magnetic properties of ordered FexAg1−x nanowire arrays embedded in anodic alumina membranes

Chemical Physics Letters ◽

10.1016/s0009-2614(01)00312-8 ◽

2001 ◽

Vol 339 (3-4) ◽

pp. 174-178 ◽

Cited By ~ 23

Author(s):

Y.W. Wang ◽

G.W. Meng ◽

C.H. Liang ◽

G.Z. Wang ◽

L.D. Zhang

Keyword(s):

Magnetic Properties ◽

Anodic Alumina ◽

Nanowire Arrays ◽

Alumina Membranes

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Photoelectrochemical Characterization of Cu[sub 2]O-Nanowire Arrays Electrodeposited into Anodic Alumina Membranes

Electrochemical and Solid-State Letters ◽

10.1149/1.2789403 ◽

2007 ◽

Vol 10 (12) ◽

pp. K63 ◽

Cited By ~ 24

Author(s):

R. Inguanta ◽

C. Sunseri ◽

S. Piazza

Keyword(s):

Anodic Alumina ◽

Nanowire Arrays ◽

Alumina Membranes ◽

Photoelectrochemical Characterization

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Magnetization reversal and magnetic anisotropy of Fe, Ni and Co nanowires in nanoporous alumina membranes

MRS Proceedings ◽

10.1557/proc-674-u4.5 ◽

2001 ◽

Vol 674 ◽

Cited By ~ 1

Author(s):

M. Kröll ◽

L. J. de Jongh ◽

F. Luis ◽

P. Paulus ◽

G. Schmid

Keyword(s):

Magnetic Anisotropy ◽

Magnetization Reversal ◽

Low Temperatures ◽

Magnetocrystalline Anisotropy ◽

Small Diameter ◽

Anisotropy Constant ◽

Magnetic Domains ◽

Alumina Membranes ◽

Subsequent Propagation ◽

Co Nanowires

ABSTRACTThe magnetization reversal and magnetic anisotropy of Fe, Ni and Co nanowires is studied at low temperatures. All nanowires show a strong shape anisotropy with the easy axis being parallel to the long axis of the wires. Co nanowires additionally show a temperature dependent magnetocrystalline anisotropy along the hexagonal c-axis, which is directed nearly perpendicular to the long axis of the wires, as is confirmed by X-Ray diffraction measurements [1] and reported by Strijkers et al. who performed NMR measurements on samples prepared in a similar way [2]. Therefore, at low temperatures and for large wire diameters a competition between magnetocrystalline and shape anisotropies can be observed. Co wires with a small diameter, however, do not show a significant magnetocrystalline anisotropy. Fcc-Co, which is only known as a high-temperature Co modification and which does not have a large magnetocrystalline anisotropy constant, becomes the predominant Co modification here [1,3]. Investigations on the size dependence of the switching field for Fe and Ni nanowires provide information about the magnetization reversal process, which takes place via a nucleation of small magnetic domains probably at the end of the wires, and subsequent propagation of the domain wall along the wire.

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