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- W2022909973 abstract "Nanocrystalline YCo5 powders with high coercivity were prepared by mechanical milling and subsequent heat treatment at 820 °C for different annealing times, ta = 2.5, 3.0, 3.5 and 4.5 min, obtaining average crystallite sizes of <D> 17, 19, 32 and 39 nm., respectively. The coercivity values were determined from the hysteresis loops measured at maxima fields of Hm = 5 and 20 T. The highest coercivity was obtained for the sample exhibiting <D> 19 nm, where at room temperature and Hm = 5 T, the coercivity value is of 9.0 kOe. At 77 K and Hm = 5 T, the coercivity increase to 11.8 kOe and for Hm = 20 T, a higher value such as 13.1 kOe was found. The Ms/Mr ratio is enhanced to 0.62 indicating the occurrence of exchange interaction among nanocrystalline magnets." @default.
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- W2022909973 date "2009-04-01" @default.
- W2022909973 modified "2023-09-23" @default.
- W2022909973 title "Annealing Effect on Microstructure and Coercivity of YCo<sub>5</sub> Nanoparticles Obtained by Mechanical Milling" @default.
- W2022909973 doi "https://doi.org/10.4028/www.scientific.net/amr.68.122" @default.
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