Magnetism and magnetoresistance effect in the Co-Cu and Co-Ag films produced by pulse electrodeposition

Houga, T.; Zaman, H.; Chikazawa, Susumu; Ueda, Y.

doi:10.1109/intmag.1999.837371

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…This also suggests a change in the size and interaction effects of Co grains in the Au matrix with a wide distribution range. These results are consistent with the results of the low temperature magnetizations of Co-Cu [30] and Co-Ag [34] films. It is possible that the small cobalt grains present in Co-Au films deposited at the current density of 5 mA/cm 2 contributed to the larger MR values for these films [44].…”

Section: Composition Dependence Of Saturation Magnetizationsupporting

confidence: 92%

Magnetotransport Properties of Co-Au Granular Alloys

Rizal¹,

Ueda²,

Pokharel³

2011

IJAPM

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Abstract-A series of Cox-Au1-x granular alloys was grown using pulsed-current electrodeposition on polyimide substrates. The relationship between the giant magnetoresistance effect, saturation magnetization, and grain size was examined as the deposition current density and annealing temperatures were changed. A maximum magnetoresistance (MR) ratio of 4.5 % was obtained. The magnetization and ferromagnetic grain size of the as-deposited and annealed alloy films were examined against the deposition current density. The saturation magnetization decreased as the composition of Au was increased for both the alloys deposited at the current densities of 1 and 5 mA/cm2. The total magnetic moment further decreased on annealing. The grain size is found to be highly influenced by both the deposition current density and temperature. A low temperature magnetization measurement suggested that the ferromagnetic grain size decreases with increase in current densities. For the annealed samples, the ferromagnetic grain sizes were found to be dispersed in the Au matrix with different diameters. The decrease in magnetic moments with annealing is correlated with the grain size of the Co and its distribution in the gold matrix. The MR ratio increased with the increase in the deposition current density as a result of the formation of smaller grain size at higher deposition current densities.

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Section: Composition Dependence Of Saturation Magnetizationsupporting

confidence: 92%

Magnetotransport Properties of Co-Au Granular Alloys

Rizal¹,

Ueda²,

Pokharel³

2011

IJAPM

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“…Chemical processes range from simple chemical deposition method to more advance constant current galvanostatic, potentiostatic, and potentiodynamic to Pulsed-current electrodeposition techniques to chemical vapor deposition methods such as Plasma, Laser and Thermal vapor deposition [5,32,34,60,63,[97][98][99][100][101][102][103][104][105][106][107][108][109][110][111].…”

Section: Experimental Methodsmentioning

confidence: 99%

“…The various possible parameters used for the fabrication of the Co/Cu, Co/Au and Co/Ag multilayers are listed in Table 1. Pulsed-current deposition method have been used by us and several others to deposit multilayered structures of nano-dimension of Co-Cu, Co-Au and Co-Ag and the typical deposition conditions used are respectively outlined in [60,97,105,107,[112][113][114][115] and [64,67,103].…”

Section: Experimental Methodsmentioning

confidence: 99%

Ferromagnetic Multilayers: Magnetoresistance, Magnetic Anisotropy, and Beyond

2016

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Abstract:Obtaining highly sensitive ferromagnetic, FM, and nonmagnetic, NM, multilayers with a large room-temperature magnetoresistance, MR, and strong magnetic anisotropy, MA, under a small externally applied magnetic field, H, remains a subject of scientific and technical interest. Recent advances in nanofabrication and characterization techniques have further opened up several new ways through which MR, sensitivity to H, and MA of the FM/NM multilayers could be dramatically improved in miniature devices such as smart spin-valves based biosensors, non-volatile magnetic random access memory, and spin transfer torque nano-oscillators. This review presents in detail the fabrication and characterization of a few representative FM/NM multilayered films-including the nature and origin of MR, mechanism associated with spin-dependent conductivity and artificial generation of MA. In particular, a special attention is given to the Pulsed-current deposition technique and on the potential industrial applications and future prospects. FM multilayers presented in this review are already used in real-life applications such as magnetic sensors in automobile and computer industries. These material are extremely important as they have the capability to efficiently replace presently used magnetic sensors in automobile, electronics, biophysics, and medicine, among many others.

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Magnetoresistance and Magnetic Anisotropy Properties of Strain-Induced Co/Ag Multilayer Films

Rizal

Ueda

2009

IEEE Trans. Magn.

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Magnetism and magnetoresistance effect in the Co-Cu and Co-Ag films produced by pulse electrodeposition

Cited by 3 publications

References 4 publications

Magnetotransport Properties of Co-Au Granular Alloys

Magnetotransport Properties of Co-Au Granular Alloys

Ferromagnetic Multilayers: Magnetoresistance, Magnetic Anisotropy, and Beyond

Magnetoresistance and Magnetic Anisotropy Properties of Strain-Induced Co/Ag Multilayer Films

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