نتایج جستجو برای: cofe alloy
تعداد نتایج: 52691 فیلتر نتایج به سال:
Solid oxide cells (SOCs) including solid fuel (SOFCs) and electrolysis (SOECs) are advanced electrochemical energy storage conversion devices. However, the lack of highly active stable electrode materials impedes their practical applications. Herein, in-situ exsolved CoFe nanoparticles on perovskite matrixes with abundant defects developed as bifunctional electrocatalysts for SOCs from Sr2FeMo1...
The granular layered magnetic system Co80Fe20( )/Al2O3(3 nm), where the Co80Fe20 layers of nominal thickness form separate, almost spherical magnetic granules of typical diameter 2–3 nm between the Al2O3 spacers, was studied. We discuss measurements of the dc and ac magnetic susceptibility for 1 nm 1.3 nm at temperatures 10 K 300 K and ac frequencies 0.01 Hz 10 Hz, revealing a rich variety of m...
Novel shape- and structural-controlled superparamagnetic nanostructures composed of self-supported spherical and rod-like CoFe(2)O(4) colloidal nanocrystals have been prepared by thermolysis of a stoichiometric Co(2+)Fe(2)(3+)-oleate complex in organic solution with periodic injection of hexane for controlling the nucleation, assembly, and growth of the nuclei.
The influences of anionic sodium dodecylsulfate (SDS) and cationic Hexadecyltrimethylammonium bromide (HTAB) surfactants on the incorporation and distribution of barium hexaferrite nanoparticles in the electrodeposited CoFe-BaFe12O19 composite thin films were studied. Sulphate bathes with natural pH containing 0 to 2 g/L surfactants were used for electroplating at room temperature. Field emissi...
In amorphous alloys the initial susceptibility and induced anisotropy are due to structural rearrangements which are described by double well systems. The analysis of the magnetic after effect (MAE). spectra in FeB alloys and the induced anisotropy in CoFe~isiB reveals broad asymmetric activation energy spectra between O R < ~ F e B < 2 eV, 1.2 eV < QR < 2.7.
Abstract The fumed SiO 2 and Al O 3 oxides with a specific surface area of about 80 m g –1 were used for the synthesis Ni(80)Fe(20)/SiO , Co(93)Fe(7)/SiO Ni(80)Fe(20)/Al Co(93)Fe(7)/Al nanocomposites, numbers between brackets indicate metal content in wt%, being 10 wt% mass catalysts. Catalytically active bimetallic compositions (NiFe CoFe) that modified oxides’ prepared using solvate-stimulate...
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