IEEE Transactions on Magnetics · 1986 · 45 citations · 2 references
Materials ScienceMagnetismMagnetic PropertiesFerromagnetismEngineeringNatural SciencesApplied PhysicsCondensed Matter PhysicsMicromagneticsAdditional PhaseTem StudiesEqual Mass ConcentrationsMagnetoelasticitySintered Fe-nd-b MagnetsMagnetic PropertyMagnetic MaterialMagnetic Materials
In sintered Fe-Nd-B magnets with additions of Al, Fe is substituted by Al in Fe <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">14</inf> Nd <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> B but not in Fe <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> Nd <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1+&varepsilon</inf> B <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> . An additional phase containing Fe and Nd in nearly equal mass concentrations and enriched in Al was found in these magnets. Thin edges of Fe <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">14</inf> Nd <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> B are found to decompose to mainly bcc α-Fe and hexagonal Nd <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> O <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> by selective oxidation in the TEM. Thin boundary layers of nm thickness are shown to consist of Nd-rich material of fcc structure with a ≃ 0.52 nm.
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Kenji Hiraga, Makoto Hirabayashi, Masato Sagawa et al. · Japanese Journal of Applied Physics · 1985 · 70 citations
Magnetic Properties, Engineering, High-resolution Electron Microscopy +19