Giant Magnetoresistance and Magnetic Properties of CoFe/Cu Multilayer Films: Dependence of Electrolyte pH

Sahin, T.; Köçkar, Hakan; Alper, Mürsel

doi:10.1007/s10948-012-1848-y

Cited by 18 publications

(8 citation statements)

References 28 publications

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“…Therefore, the coupling between adjacent layers has to be lower to obtain GMR in the lower magnetic field such as multilayers and spin valves. For the CoFe/Cu multilayers produced by the electrodeposition, there are some reports on the dependence of their GMR and its sensitivity on ferromagnetic or non-magnetic layers thicknesses [8,[14][15][16][17][18][19][20][21]. Non-magnetic layer dependence of deposition potential were studied by Toth et al [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simple electrodepositing of CoFe/Cu multilayers: Effect of ferromagnetic layer thicknesses

Tekgül

Alper

Köçkar

2017

Journal of Magnetism and Magnetic Materials

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Section: Introductionmentioning

confidence: 99%

“…Our previous study [18] was about the effect of the Fe concentration in electrolyte on CoFe/Cu multilayers. Sahin et al [19] presented the pH dependence of GMR in CoFe/Cu multilayer. Sahin et al [20] presented the study of CoFe/Cu multilayer as a function of Cu layer thickness with electrodeposition technique.…”

Section: Introductionmentioning

confidence: 99%

Simple electrodepositing of CoFe/Cu multilayers: Effect of ferromagnetic layer thicknesses

Tekgül

Alper

Köçkar

2017

Journal of Magnetism and Magnetic Materials

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“…18 Moreover, FeCo thin films have been recently reported to exhibit giant magnetostriction, 19 and giant magnetoresistance when combined with Cu segments into multilayered thin films. 20 The influence of nonmagnetic Cu segments on the magnetization of the NWs was primarily simulated, and experimentally verified and investigated in detail by a vibrating sample magnetometer (VSM) and magnetic force microscope (MFM). The results demonstrate that magnetic easy axis can be reversed using the appropriate NW architecture.…”

Section: Introductionmentioning

confidence: 99%

“…FeCo/Cu MSNWs are attractive due to the higher saturation magnetization (around 2.4 T) exhibited by the FeCo system . Moreover, FeCo thin films have been recently reported to exhibit giant magnetostriction, and giant magnetoresistance when combined with Cu segments into multilayered thin films . The influence of nonmagnetic Cu segments on the magnetization of the NWs was primarily simulated, and experimentally verified and investigated in detail by a vibrating sample magnetometer (VSM) and magnetic force microscope (MFM).…”

Section: Introductionmentioning

confidence: 99%

Multisegmented FeCo/Cu Nanowires: Electrosynthesis, Characterization, and Magnetic Control of Biomolecule Desorption

Özkale

Shamsudhin

Chatzipirpiridis

et al. 2015

ACS Appl. Mater. Interfaces

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In this paper, we report on the synthesis of FeCo/Cu multisegmented nanowires by means of pulse electrodeposition in nanoporous anodic aluminum oxide arrays supported on silicon chips.By adjusting the electrodeposition conditions, such as the pulse scheme and the electrolyte, alternating segments of Cu and ferromagnetic FeCo alloy can be fabricated. The segments can be built with a wide range of lengths (15 -150 nm) and exhibit a close-to-pure composition (Cu or FeCo alloy) as suggested by EDX mapping results. The morphology and the crystallographic structure of different nanowire configurations have been assessed thoroughly concluding that Fe, Co and Cu form solid solution. Magnetic characterization using vibrating sample magnetometry and magnetic force microscopy reveals that by introducing non-magnetic Cu segments within the nanowire architecture, the magnetic easy axis can be modified and the reduced remanence can be tuned to the desired values. The experimental results are in agreement with the provided simulations. Furthermore, the influence of nanowire magnetic architecture on the magnetically triggered protein desorption is evaluated for three types of nanowires: Cu, FeCo and multisegmented FeCo15 nm/Cu15 nm. The application of an external magnetic field can be used to enhance the release of proteins on-demand. For fully magnetic FeCo nanowires the applied oscillating field increased protein release by 83%, whereas this was found to be 45% for multisegmented FeCo15 nm/Cu15 nm nanowires. Our work suggests that a combination of arrays of nanowires with different magnetic configurations could be used to generate complex substance concentration gradients or control delivery of multiple drugs and macromolecules.

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“…[5][6][7][8] Owing to the special layered structure, this new coating system had unique properties, such as high strength, excellent corrosion resistance and giant magnetoresistance. [9][10][11][12][13][14][15] Although the preparations and properties of CMMF were investigated extensively, few people had worked on the alloying of CMMF. The CMMF generally has less period thickness, varying from the microscale to the nanometre level, and there exists a great concentration gradient between the adjacent sublayers of CMMF.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of Ni–Fe alloy coatings prepared by alloying Ni/Fe multilayer films

Luo

Fei

2015

Surface Engineering

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As the compositions of traditional Ni-Fe alloy coatings generated by the co-deposition of Ni and Fe could not be modulated easily, a novel method for preparing a new Ni-Fe alloy coatings having controllable components was proposed, namely the alloying of compositionally modulated Ni/Fe multilayer films. The surface and cross-section morphologies of compositionally modulated Ni/Fe multilayer films before and after the alloying were examined by a field emission scanning electron microscopy, and the element distribution of the new Ni-Fe alloy coatings prepared by the alloying of compositionally modulated Ni/Fe multilayer films was analysed using an energy dispersive X-ray analyser. The results showed that the distribution of elements in the new Ni-Fe alloy coatings was uniform. Moreover, the magnetic properties of the new Ni-Fe alloy coatings were investigated and the results showed that the magnetic performances of the new Ni-Fe alloy coatings differed from those of the traditional Ni-Fe alloy coatings.

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Giant Magnetoresistance and Magnetic Properties of CoFe/Cu Multilayer Films: Dependence of Electrolyte pH

Cited by 18 publications

References 28 publications

Simple electrodepositing of CoFe/Cu multilayers: Effect of ferromagnetic layer thicknesses

Simple electrodepositing of CoFe/Cu multilayers: Effect of ferromagnetic layer thicknesses

Multisegmented FeCo/Cu Nanowires: Electrosynthesis, Characterization, and Magnetic Control of Biomolecule Desorption

Magnetic properties of Ni–Fe alloy coatings prepared by alloying Ni/Fe multilayer films

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