Magnetic Properties of CoFeB-SiO2 Nanocomposite and [(Co40Fe40B20)X(SiO2)100-X /α-Si:H]n Multilayer Films

Elena  A. Denisova; Rauf S. Iskhakov; Lidia Chekanova; Yuri Kalinin; Alexander Sitnikov

doi:10.4028/www.scientific.net/SSP.190.466

Paper Titles

Influence of Permalloy Layer and Ti Spacer Thicknesses on Magnetic and Magnetoresistive Properties of Fe19Ni81/Ti/Tb-Co Films
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Relaxation Mössbauer Spectroscopy of Iron Oxides Nanoparticles in Superferrimagnetic Regime
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Peculiarity of the Ferromagnetic and Spin-Wave Resonance in Exchange-Coupled NiFe/X/NiFe Three Layer Structures (X=Ag, Cu, DyCo)
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Coercivity and Exchange Bias in Magnetic Sandwich Structure Prepared by Chemical Deposition
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HomeSolid State PhenomenaSolid State Phenomena Vol. 190Magnetic Properties of CoFeB-SiO2 Nanocomposite...

Magnetic Properties of CoFeB-SiO₂ Nanocomposite and [(Co₄₀Fe₄₀B₂₀)_X(SiO₂)_100-X/α-Si:H]_nMultilayer Films

Abstract:

Magnetic properties of (Co₄₀Fe₄₀B₂₀)_X(SiO₂)_100-X nanogranular composite films, [(Co₄₀Fe₄₀B₂₀)_X(SiO₂)_100-X/a-Si:_n multilayer films and layered (Co₄₀Fe₄₀B₂₀)_X(SiO₂)_100-X films with X ranging from 30 to 80 have been characterized by means of magnetic measurements and ferromagnetic resonance. Layer thickness was varied between 1.3 and 6 nm. Thermal decrease of (Co₄₀Fe₄₀B₂₀)_X(SiO₂)_100-X composite magnetization follows the T^3/2 law. The spectrum of standing spin-wave has been detected in the perpendicular experiment configuration for films with the metal phase content above 48 vol. %. It is found that the H_r(n²) dependencies are non-linear. Such behavior is probably caused by the fluctuations of magnetic parameters (the magnetization and the ferromagnetic exchange coupling) in nanocomposite films. A comparison between the magnetic properties of (Co₄₀Fe₄₀B₂₀)_X(SiO₂)_100-Xgranular films and [(Co₄₀Fe₄₀B₂₀)_X(SiO₂)_100-X/a-Si:_n multilayer films was carried out.

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Solid State Phenomena (Volume 190)

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466-469

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https://doi.org/10.4028/www.scientific.net/SSP.190.466

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Online since:

June 2012

Authors:

Elena A. Denisova, Rauf S. Iskhakov, Lidia Chekanova, Yuri Kalinin, Alexander Sitnikov

Keywords:

Ferromagnetic Resonance (FMR), Granular Composite Films, Multilayer Film, Spin-Wave Resonance

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