Magnetization and impedance measurements of multilayer Co/Cu structures in millimeter waveband

Belozorov, D. P.; Деркач, В. Н.; Nedukh, S. V.; Ravlik, A. G.; Roschenko, S.T.; Shipkova, I. G.; Tarapov, S. I.; Yıldız, F.; Aktaş, B.

doi:10.1016/s0304-8853(03)00104-5

Cited by 14 publications

(3 citation statements)

References 13 publications

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“…GMR property based on spin-dependent scattering [14] might result in pronounced scattering losses when the critical limit is exceeded at the well defined, larger grain boundaries, interfaces. Also it is important to note that there are already similar research concerning magnetoresistance, magneto-impedance properties and their correlation with ferromagnetic resonance properties of Cu-Co multilayers, Co x [Al 2 O 3 ] (1 À x) and electrodeposited Cu-Co-Ni alloys [15][16][17][18][19][20]. These studies also have highlighted the importance of local microstructure of these electrodeposits, concentration of magnetic ion(s) and the magnitude of effective anisotropy filed in influencing the magneto resistance properties.…”

Section: Ferromagnetic Propertiesmentioning

confidence: 99%

Giant magnetoresistance (GMR) and ferromagnetic properties of DC and pulse electrodeposited Cu–Co alloys

Rajasekaran¹,

Mohan²,

Chelvane³

et al. 2012

Journal of Magnetism and Magnetic Materials

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Section: Ferromagnetic Propertiesmentioning

confidence: 99%

Giant magnetoresistance (GMR) and ferromagnetic properties of DC and pulse electrodeposited Cu–Co alloys

Rajasekaran¹,

Mohan²,

Chelvane³

et al. 2012

Journal of Magnetism and Magnetic Materials

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“…New effects specific for nanostructures and thin magnetic films such as giant magnetoresistance and giant magnetoimpedance can also become operational in such systems as they require far fewer external fields to change constitutive parameters such as permeability and conductivity [5,6].…”

Section: Introductionmentioning

confidence: 99%

Tamm states in magnetophotonic crystals and permittivity of the wire medium

Belozorov¹,

Khodzitsky²,

Tarapov³

2009

J. Phys. D: Appl. Phys.

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The system consisting of a magnetophotonic crystal (MPC) and a medium with negative permittivity was studied both experimentally and theoretically. The medium was prepared as a set of conductive wires—wire medium (WM). The MPC elementary cell comprises three layers (air, ferrite and quartz). The Tamm state (TS) position in a stop band was calculated depending on the thickness of the air layer in an MPC elementary cell and on the value of the WM negative permittivity. Using the experimental value of the TS frequency the inverse problem was solved and the effective permittivity of the WM bounding the MPC was obtained.

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“…The Electron Spin Resonance (ESR) technique[2] in 35-40 GHz band at room temperatures was applied for research of dynamic magnetic properties of nanostructures. The open resonator with quality factor of about 2x103 was applied.…”

mentioning

confidence: 99%

Magnetoresonance Research of Cox(Al2O3)1-x Nanogranular Films in the Vicinity of Magnetic Phase Transition

Bagmur¹,

Kravets²,

Nedukh³

et al. 2007

2007 International Kharkiv Symposium Physics and Engrg. Of Millimeter and Sub-Millimeter Waves (MSMW)

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2) IMag NASU and MESU, 36-b, Vernadsky blvd, Kiev, 03142, UKRAINE tel:38044249095, Fax 38044249095; apogor@imag. kiev. ua The research of fundamental features of granular layered magnetic nanostructures is of strong interest due to very attractive perspectives of their application in spintronics and nanoelectronics of Extra High Frequencies (EHF). In particular, spin dependent features of such structures, namely, the Giant Magnetic Resistance (GMR) can be used for development of novel generations of electronically tunable EHF-elements, for the prospective quantum computers design, etc. Thus the research of electron magnetic subsystems of these structures in the frequency band of their potential application seems to be of certain interest for specialists both in solid state physics and electronic technologies.Specimens. The Cox(A12O3)1-x nanogranular films with Co granules in A1203 matrix (where X is the volume concentration of Co ranging from 4% to 44%) with the thickness of about 150 nm were under study. The average size of Co granules is of 1-5 nm. The films were deposited on glass-ceramic substrates at room temperature in vacuum 10-4 Pa using the dual electron beam deposition technique (evaporation from Co and A1203 independent sources) [1]. The composition of the films was determined using energy dispersive analysis of x-ray.Experimental Static experiments data. The measurements of magnetoresistance (GMR) for "current-in-plane orientation" (the DC current and static magnetic field lie in plane of the specimen) have been carried out. The specimens demonstrated (Fig.1a) the maximum of GMR for the concentration of Co in the vicinity of X~30%.At the same time the phase transition dielectric-metal (Fig.lb) takes place at X~16 % (for X`16% -R-is of about 2.4 MQ).Note, that the GMI effect for 3 5-40 GHz was estimated as magnitudes less than 0.5 %. 5

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Magnetization and impedance measurements of multilayer Co/Cu structures in millimeter waveband

Cited by 14 publications

References 13 publications

Giant magnetoresistance (GMR) and ferromagnetic properties of DC and pulse electrodeposited Cu–Co alloys

Giant magnetoresistance (GMR) and ferromagnetic properties of DC and pulse electrodeposited Cu–Co alloys

Tamm states in magnetophotonic crystals and permittivity of the wire medium

Magnetoresonance Research of Cox(Al2O3)1-x Nanogranular Films in the Vicinity of Magnetic Phase Transition

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