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RESEARCH PRODUCT
Characterization and magnetic properties of nanoparticles based on FePt solid solution with an oxide shell
Gerd SchönhenseI.o. ShpetnyiSergej A. NepijkoS. ChernovMichael KlimenkovHans-joachim ElmersA.s. KovalenkoI. Yu. Protsenkosubject
Materials scienceCondensed matter physicsAnnealing (metallurgy)OxideNanoparticleConcentration effectCoercivityCondensed Matter PhysicsMagnetic hysteresisElectronic Optical and Magnetic MaterialsCondensed Matter::Materials Sciencechemistry.chemical_compoundExchange biaschemistryFerromagnetismdescription
Abstract We present the results of magnetic properties investigations of ferromagnetic nanoparticles which ensembled with ferromagnetic shell. The aim of this work is to study the connection of structure–phase composition and thermal treatment with the magnetic properties, partially, with the coercive force and the exchange bias field in a two-dimension spin system of core–shell type. It is found that the exchange bias field increases with the growth of the oxide shell thickness. This is realized by annealing in a dosed oxygen flow. The decrease of the coercive force with the increase of annealing temperature is connected with the concentration effect (the concentration of ferromagnetic particles decreases).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-01-01 | Journal of Magnetism and Magnetic Materials |