Journal of Applied Physics · 2012 · 34 citations · 15 references
Natural SciencesMaterials EngineeringMaterials ScienceMagnetic MaterialsMaterials CharacterizationMetallic MaterialsFerromagnetic MaterialsFerromagnetismMagnetic CharacterizationMagnetic OxidesMagnetic Properties Of SolidsMagnetism In SolidsGrain Size Effects On MagnetizationLattice Parameter AnalysisLattice Parameter DeterminationMagnetic Materials CharacterizationMicrostructural ChangeMicrostructural CharacterizationPowder Metallurgy Of MagnetsSintered Magnets
The magnetic and microstructural properties of (Nd27.68Dy4.89)-Febal.B1.0M2.4 (wt. %, M = Cu, Al, Co, and Nb) sintered magnets doped with Dy2O3 and DyHx powders were studied. The coercivity of the DyHx-doped magnet improved, with no change in the remanence. Well-developed core-shell microstructures were seen in the DyHx-doped magnet, as compared to the case of the Dy2O3-doped magnet. Diffusion of Dy was enhanced in the DyHx-doped magnet, probably because dissolution of hydrogen in Nd2Fe14B increased the lattice parameter. The (00L) grain alignment in the DyHx-doped magnet was also improved.
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New permanent magnet materials
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Natural Sciences, Materials Engineering, Materials Science +12