Thickness dependence of the microstructures and magnetic properties of electroplated Co nanowires

Ye, Zuxin; Liu, Haidong; Luo, Zhiping; Lee, Han-Gil; Wu, Wenhao; Naugle, D. G.; Lyuksyutov, I. F.

doi:10.1088/0957-4484/20/4/045704

Cited by 23 publications

(17 citation statements)

References 49 publications

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“…Many studies have been performed to determine the magnetic properties of metal nanowires [6][7][8]. The studies show both an increase [9,10] and a reduction [11,12] of coercivity value with a decrease in nanowire diameter and length occurred with an easy axis of magnetization along nanowires. Membrane parameters can also affect the crystalline structure of nanowires [13].…”

Section: Introductionmentioning

confidence: 99%

MAGNETIC PROPERTIES OF Fe NANOWIRES ELECTRODEPOSITED IN SELF-ORDERED ALUMINA MEMBRANE

Dobosz

Gumowska

Czapkiewicz

2018

mafe

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The iron nanowire arrays (NWs) were fabricated by DC electrodeposition into hexagonally ordered alumina pores. With the use of X-ray diffraction analysis, the structure of iron wires was determined. The iron wires have the Body Centered Cubic structure. The influence of cathodic deposition potential and parameters of membrane on the magnetic properties of nanowire arrays was investigated. Magnetic properties analyzed by VSM measurements suggest that the easy axis of magnetization follows the nanowire axis, with coercivity increasing with a decrease of nanowire diameter and length. The dependence of the height of Fe wires on the electrodeposition potential was determined. The low cathodic potential and smaller pore diameter are the synthesis parameters most beneficial for large coercivity with easy axis along nanowires.

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Section: Introductionmentioning

confidence: 99%

MAGNETIC PROPERTIES OF Fe NANOWIRES ELECTRODEPOSITED IN SELF-ORDERED ALUMINA MEMBRANE

Dobosz

Gumowska

Czapkiewicz

2018

mafe

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“…Co NWs have been synthesized successfully by EDP in porous templates [1,5], which is a low-cost and efficient technique for producing NW arrays with ultrahigh aspect ratios (length to diameter) and controllable diameters. Depending on the EDP conditions (such as the power and the pH value of the electrolyte), various complex microstructures that are quite different from those of the bulk have been found in Co NWs [6][7][8][9]. While extensive studies have been performed to investigate the correlation between their magnetic properties and microstructures [6][7][8][9][10], little is known about their mechanical behaviors.…”

Section: Introductionmentioning

confidence: 99%

In situtensile testing of individual Co nanowires inside a scanning electron microscope

et al. 2009

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Uniaxial quasi-static tensile testing on individual nanocrystalline Co nanowires (NWs), synthesized by electrochemical deposition process (EDP) in porous templates, was performed inside a scanning electron microscope (SEM) using a microfabricated tensile stage consisting of a comb drive actuator and a clamped-clamped beam force sensor. A 'three-beam structure' was fabricated by focused ion beam induced deposition (FIBID) on the stage, from which the specimen elongation and the tensile force could be measured simultaneously from SEM images at high magnification. A novel strategy of modifying device topography, e.g. in the form of trenches and pillars, was proposed to facilitate in situ SEM pick-and-place nanomanipulation, which could achieve a high yield of about 80% and reduce the difficulties in specimen preparation for tensile testing at the nanoscale. The measured apparent Young's modulus (75.3 +/- 14.6) GPa and tensile strength (1.6 +/- 0.4) GPa are significantly lower than the bulk modulus and the theoretical strength of monocrystalline samples, respectively. This result is important for designing Co NW-based devices. The origins of these distinctions are discussed in terms of the stiffnesses of the soldering portions, specimen misalignment, microstructure of the NWs and the experimental measurement uncertainty.

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“…All these together make those promising for use in the perpendicular magnetic recording with high packing density. 3,4 To date, many studies have been performed to obtain ferromagnetic NWs by using electrochemical deposition of metals in the porous anodic alumina templates 5,6 and in track etched polymer membranes. 7,8 Porous silicon (PS) templates provide additional unique features since the diameter of the pores and the porosity of the channels can be varied in a wider range than in case of porous anodic alumina and polymer membranes.…”

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confidence: 99%

Electrochemical Deposition and Characterization of Ni in Mesoporous Silicon

Dolgiy

Redko

Bandarenka

et al. 2012

J. Electrochem. Soc.

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Nickel nanowires have been formed by stationary electrochemical deposition of nickel into mesoporous silicon templates from the modified Watts bath. Monitoring of the porous silicon potential during the electrochemical deposition has given the determination of the emergence of Ni on the outer surface of porous layer. Maximum filling factor of porous silicon with Ni has been achieved to 67%. The pore dimensions have been found to define the length and diameter of the Ni nanowires that have equaled to 10 mu m and 100-120 nm, respectively. The polycrystalline nature of the nickel nanowires, as well as the expansion of nickel lattice constant in comparison with bulk material has been established by analyzing the X-ray diffraction spectra. The synthesized samples have possessed ferromagnetic properties, which have been confirmed by temperature measurements of the magnetization. Smaller values of the specific magnetization of the Ni/PS samples and the atomic magnetic moment of Ni atoms at the low temperature with respect to those of bulk material have been suggested to be mostly caused by formation of nickel silicide at the beginning of the Ni electrochemical deposition. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.050210jes] All rights reserved

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Thickness dependence of the microstructures and magnetic properties of electroplated Co nanowires

Cited by 23 publications

References 49 publications

MAGNETIC PROPERTIES OF Fe NANOWIRES ELECTRODEPOSITED IN SELF-ORDERED ALUMINA MEMBRANE

MAGNETIC PROPERTIES OF Fe NANOWIRES ELECTRODEPOSITED IN SELF-ORDERED ALUMINA MEMBRANE

In situtensile testing of individual Co nanowires inside a scanning electron microscope

Electrochemical Deposition and Characterization of Ni in Mesoporous Silicon

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