Controlled fabrication of ion track nanowires and channels

Spohr, R.; Zet, Cristian; Fischer, B.; Kiesewetter, H.R.; Apel, P.Yu.; Gunko, Igor; Ohgai, Takeshi; Westerberg, L.

doi:10.1016/j.nimb.2009.12.017

Cited by 37 publications

(19 citation statements)

References 58 publications

(62 reference statements)

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“…By the way, in case of a thin film containing an array of nanowires with a large aspect more than ca. 100 [24][25][26][27], the array will be easily magnetized even in the perpendicular direction to the film plane due to decreasing f d . On the contrary, when the magnetic field is applied to in-plane direction to the film plane, f d will be almost zero and H eff will be equal to H a .…”

Section: Magnetic Properties Of Electrodeposited Ni-cr and Co-cr Alloysmentioning

confidence: 99%

Soft magnetic properties of Ni–Cr and Co–Cr alloy thin films electrodeposited from aqueous solutions containing trivalent chromium ions and glycine

2012

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Abstract.Ferromagnetic Ni-Cr and Co-Cr alloy thin films were electrodeposited from aqueous solution containing trivalent chromium (Cr 3+ ) ions and glycine. According to the Tafel slopes obtained from the cathode polarization curves for Ni-Cr and Co-Cr alloy deposition, it was estimated that Cr 3+ ions inhibited Ni 2+ and Co 2+ ions from electrodepositing. Ni and Co preferentially electrodeposited rather than Cr and the electrodeposition process of Ni-Cr and Co-Cr was categorized to "normal co-deposition type." At the cathode potential of -1.8 V vs.Ag/AgCl/KCl sat., Ni-9.5%Cr and Co-8.4%Cr alloy deposits were obtained. X-ray diffraction patterns of the electrodeposits revealed that pure Ni and pure Co consist of large crystal grains, while Ni-9.5%Cr and Co-8.4%Cr alloys were composed of a solid solution phase with fine crystal grains. Magnetization of Ni-9.5%Cr and Co-8.4%Cr alloy thin films with fine crystalline phase reached to saturation at ca. 2.5 kOe in perpendicular direction to the film plane while pure Ni and pure Co thin film with large crystal grains were hardly magnetized in the perpendicular direction. Soft magnetic properties were improved with increasing Cr content in the deposits.

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Section: Magnetic Properties Of Electrodeposited Ni-cr and Co-cr Alloysmentioning

confidence: 99%

Soft magnetic properties of Ni–Cr and Co–Cr alloy thin films electrodeposited from aqueous solutions containing trivalent chromium ions and glycine

2012

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“…The spacing provided by the polymer membranes is difficult to control due to the randomness of pore location obtained through the combination of the charged particle bombardment (irradiation) and chemical etching 12,13 . In spite of recent progress in fabrication of ion track nanochannels that allows a better control of the number of the pores in a membrane, their precise location is still problematic 14 . Conversely, templates obtained by aluminum anodization provide for better control of the pores through a combination voltage, acid concentration and time used during the oxidation process 12 .…”

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confidence: 99%

Interactions and reversal-field memory in complex magnetic nanowire arrays

et al. 2011

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Interactions and magnetization reversal of Ni nanowires arrays have been investigated by the first order reversal curve (FORC) method. Several series of samples with controlled spatial distribution were considered including simple wires of different lengths and diameters (70 nm and 110 nm) and complex wires with single modulated diameter along their length. Subtle features of magnetic interactions are revealed through a quantitative analysis of the local interaction field profile distributions obtained from FORC. In addition the FORC analysis indicates that the nanowire systems with a mean diameter of 70 nm appear to be organized in symmetric clusters indicative of a reversal-field memory effect.

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“…The average crystallite size was estimated from the diracting planes along the direction normal to the (hkl) plane applying the Scherrer formula (2).…”

Section: Experimental Partmentioning

confidence: 99%

Synthesis, Structure, and Catalytic Activity of Au/Poly(ethylene terephthalate) Composites

et al. 2014

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A standard technique of electroless gold deposition was modied by changing the composition of Ag-based activation solution. This allows preparation of two types of poly(ethyleneterephthalate) (PET) track etched membranes coated entirely with gold after 1, 5, and 24 h of reaction at 4• C. After dissolving the polymer template, gold nanotubes with outer diameter of 7080 nm were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diraction. Reduction of p-nitrophenol to p-aminophenol by sodium borohydride was used to investigate the catalytic activity of as-prepared Au/PET membrane. All experiments were carried out for ve consecutive cycles and rate constant of the pseudo-rst-order reaction was calculated. It was found that Au/Ag/PET composites prepared after activation for 3 min in Ag-based solution (with potassium sodium tartrate as reducing agent) more eective catalyst (k = 0.087 min −1 ) was obtained when the Au/PET samples activated with ammonia silver nitrate solution (k = 0.041 min −1 ).

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Controlled fabrication of ion track nanowires and channels

Cited by 37 publications

References 58 publications

Soft magnetic properties of Ni–Cr and Co–Cr alloy thin films electrodeposited from aqueous solutions containing trivalent chromium ions and glycine

Soft magnetic properties of Ni–Cr and Co–Cr alloy thin films electrodeposited from aqueous solutions containing trivalent chromium ions and glycine

Interactions and reversal-field memory in complex magnetic nanowire arrays

Synthesis, Structure, and Catalytic Activity of Au/Poly(ethylene terephthalate) Composites

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