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Showing 1 to 10 of 10 for “"cobalt ferrite"”.
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Magneto-Optical Study of Cobalt Ferrite Nanoparticles
… CoxFe1-xFe2O4 nanoparticles is presented, with cobalt molar ratio 0.x.1. The ferrite nanoparticles were produced using a generic wet-chemical synthesis procedure. Stoichiometric amounts of Fe2+, Fe3+ and Co2+ salts are dissolved in a non-aqueous polar medium (diethylene glycol). A …
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Investigating the Interface of Cobalt Ferrite and Hafnia.
North Carolina State University Theses Materials Science and Engineering.
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Thermodynamic evaluation of cobalt-ferrite based redox reactions for solar thermochemical conversion of CO2 into fuels
… carriers. This study investigates the use of cobalt ferrite (CoFe₂O₄) as a redox-active metal oxide for two step solar thermochemical CO₂ splitting to produce carbon monoxide, a key component of syngas. Analysis showed that increasing εgg from 0.0 to 0.95, consistently strengthened heat …
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Colloidal CoFe2O4-based nanoparticles for Magnetic Fluid Hyperthermia
… on the topic of magnetic hyperthermia.2 Despite cobalt toxicity, cobalt-containing materials and especially cobalt ferrite nanoparticles have been proposed as promising heat mediators due to its high anisotropy.3–13 In this thesis, the results obtained on two different systems, designed with the …
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A multiscale model for the oxide ion conducting and proton conducting solid oxide cells
… electrode reactions in the Lanthanum Strontium Cobalt Ferrite (La_{1-x}Sr_{x}Co_{1-y}Fe_{y} O_{3-\delta} or LSCF) based oxide ion-conducting SOCs, the reaction step involving the splitting of the surface oxygen molecules into oxide ions under SOFC mode and the combination of surface oxide ions …
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Adsorption of cobalt on gamma-Fe{u2082}O{u2083}
The treatment of gamma-Fe₂O₃ with cobalt(II) is an important commercial process since the product is used extensively as a magnetic material for magnetic recording. The preparation of cobalt-doped gamma-Fe₂O₃ consists of interacting Co(II) with particulate gamma-Fe₂O₃ in solution under alkaline …
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An investigation of electromagnetic rig-generated strong magnetic fields
… measure the magnetostriction strain of annealed cobalt ferrite and Terfenol-D based materials. It was thought that magnetic flux densities of the order 1.6 tesla would be needed in the air-gap. However after carrying out preliminary calculations for the air-core design, it was realized that very …
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Synthesis and catalytic application of functional transition metal oxides
… and α-Fe2O3, we have prepared a mixed oxide of cobalt and iron (Co-Fe-O). Cobalt ferrite with spinel structure has presented technologically interesting solid-solution phases. In fact the combination of Fe and Co at different ratios has improved the physico-chemical properties and the catalytic …
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Magnetoelectric Thin Film Heterostructures and Electric Field Manipulation of Magnetization
… depositing ferromagnetic iron-gallium (Fe-Ga) or cobalt ferrite (CoFe2o4 or CFO) films on top of differently-oriented ferroelectric PMN-PT substrates. Through significant electric field-induced strain in the piezoelectric substrate, the magnetic remanence and coercive field, as well as the …