Effect of addition of Ni on the structure and giant magnetoresistance in Fe–Cu films

Tiwari, Ashutosh; Kumar, Mukul

doi:10.1016/j.physb.2006.03.029

Cited by 11 publications

(6 citation statements)

References 17 publications

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“…[1][2][3] Multilayered Fe(Co)-Ni-Cu/polymer nanostructures with giant magnetoresistance could be used in interleaving ferromagnetic and non-magnetic metals. [4][5][6] Direct fabrication of multilayered nanosystems is a difficult technological task. As is known, sintering is a thermally activated process that is accompanied by coagulation of nanoparticles into micro-sized conglomerates.…”

Section: Introductionmentioning

confidence: 99%

Electrical and Magnetic Properties of Multilayer Polymer Structures with Nano Inclusions as Prepared by Selective Laser Sintering

Shishkovsky¹,

Morozov²

2013

j. nanosci. nanotech.

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Selective laser sintering (SLS) was used to prepare porous polymer nanocomposites comprising of a polycarbonate (PC) matrix doped with 30-50 wt% nano Ni or/and 10-30 wt% nano Cu. The electrical conductivity was measured at f = 1 MHz, bias dc voltage 40 V, and 300-400 K. Magnetic measurements were carried out at r.t. in magnetic fields of up to 10 kOe. Temperature dependence of electrophysical properties was studied for 3D samples derived from PC-Cu powders. Magnetic properties were measured for alternating ferromagnetic/non-magnetic layers with Ni and/or Cu core/polymer shell structures. Temperature dependencies for a real part of a dielectric permeability, loss tangent, and magnetization were found to have a hysteresis character. The structure of sintered items was found to depend of external dc magnetic field.

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Section: Introductionmentioning

confidence: 99%

Electrical and Magnetic Properties of Multilayer Polymer Structures with Nano Inclusions as Prepared by Selective Laser Sintering

Shishkovsky¹,

Morozov²

2013

j. nanosci. nanotech.

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“…is in continuation of our interest to study various granular thin films. [10][11][12] 2. EXPERIMENTAL DETAILS Fe x Ag y Al z granular films of various compositions were deposited by dc magnetron sputtering onto glass substrates at a sputtering pressure of Ar, p Ar = 5 × 10 −3 mbar.…”

Section: Introductionmentioning

confidence: 99%

“…This method of preparation is the same as described by us in a previous article. 11 An Ambios XP2 profiler was used to measure film thickness and these were in the range of 250-300 nm. The compositions of the films were determined by energy dispersive analysis by X-rays (EDAX) using FEI Quanta 200 ESEM system.…”

Section: Introductionmentioning

confidence: 99%

Magnetotransport and Structural Properties of Nanocrystalline FeAgAl Thin Films

Patil

Rout²,

Rao³

et al. 2008

j nanosci nanotechnol

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Structural and magnetotransport properties of metallic Fe(x)Ag(y)Al(z) nanogranular thin films were studied. These films with several compositions were prepared by dc magnetron sputtering. X-ray diffraction (XRD) measurements carried out on the samples show only Ag(111) peaks. The d-spacings determined from the Ag(111) peaks are smaller than the standard value for bulk Ag indicating a partial substitution of Fe and Al atoms in Ag matrix. Transmission electron diffraction (TEM) patterns show a number of Ag rings. Both XRD and TEM studies did not reveal any diffraction peaks due to Fe or Al. The average particle size determined from the TEM micrograph is 5.9 nm. This value is in good agreement with the grain size determined from the XRD patterns for the Al substituted samples. The MR was found to increase for smaller Al concentration and it decreases with further increase in Al content. In the samples investigated magnetoresistance ratio reaches a maximum value of about 4.5% for the Fe27Ag63Al10 film.

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“…Fe-Cu granular alloy films are interesting system that shows GMR since in this system the Fe and Cu are immiscible. We have studied Fe-Cu-Ni films by substituting Ni that dissolves in both Fe and Cu lattices [4]. Such studies on the Fe-Cu films substituted with magnetic Ni atoms that dissolve in the Cu lattice are not available in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…In the present paper, we report the studies carried out on the Fe x Cu y Ni z films prepared at different sputtering pressures. This research work is in continuation of our interest to investigate various magnetic multilayers and thin films [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Influence of sputtering pressure on the giant magnetoresistance and structure in Fe–Cu–Ni granular thin films

Tiwari¹,

Kumar²

2006

Journal of Magnetism and Magnetic Materials

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Effect of addition of Ni on the structure and giant magnetoresistance in Fe–Cu films

Cited by 11 publications

References 17 publications

Electrical and Magnetic Properties of Multilayer Polymer Structures with Nano Inclusions as Prepared by Selective Laser Sintering

Electrical and Magnetic Properties of Multilayer Polymer Structures with Nano Inclusions as Prepared by Selective Laser Sintering

Magnetotransport and Structural Properties of Nanocrystalline FeAgAl Thin Films

Influence of sputtering pressure on the giant magnetoresistance and structure in Fe–Cu–Ni granular thin films

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