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- W2897319934 abstract "Abstract The τ -MnAlC/FeCo system has potential to be applied as rare earth-free permanent magnet, due to exchange coupled between hard and soft magnetic phases as alternative for the development of high energy product permanent magnets. In this work the hard-magnetic phase Mn53.3Al45C1.7 ( μ 0Hc = 0.37 T of coercive force, Mr = 23.52 Am2/kg of remanent magnetization, Ms = 52.94 Am2/kg of saturation magnetization and (BH)max = 3.89 kJ/m3 of maximum energy product) was mixed with the soft magnetic phase Fe65Co35 ( μ 0Hc = 0.007 T and Ms = 221.33 Am2/kg) using a solid-state procedure. The magnetic materials were sintered using different ratios of hard and soft magnetic phases: 95:5, 90:10, 85:15 and 80:20; and different sintering temperatures (300, 400, 500 and 600 °C) in order to improve the magnetic properties. The magnetic exchange coupling between MnAlC and FeCo was proved by the hysteresis loop and its corresponding Thamm-Hesse analysis. The best result was obtained for MnAlC/FeCo (95/5 wt%) sintered at 500 °C during 30 min, for which the magnetic properties were μ 0Hc = 0.277 T, Ms = 76.43 Am2/kg and (BH)max = 5.57 kJ/m3." @default.
- W2897319934 created "2018-10-26" @default.
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- W2897319934 date "2019-03-01" @default.
- W2897319934 modified "2023-10-16" @default.
- W2897319934 title "Evidence of exchange coupling in <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML altimg=si3.gif overflow=scroll><mml:mrow><mml:mi>τ</mml:mi></mml:mrow></mml:math>-MnAlC/FeCo system" @default.
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- W2897319934 doi "https://doi.org/10.1016/j.jmmm.2018.10.069" @default.
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