Magnetocrystalline anisotropy of Pr2Fel4B

The saturation magnetization and magnetocrystalline anisotropy of Pr2Fel4B have been studied from magnetization curves of magnetically aligned powders. The saturation magnetization of Pr2Fel4B increases from 1.67 T at 280 K to 1.91 T at 4.2 K with decreasing temperature. The K1 and K2 of Pr2Fel4B decrease linearly with increasing temperature with the ratio of ΔK1=-5.83x104 J/m3 K and ΔK2=-3.5x104 J/m3 K, respectively. The K1 and K2 of Pr2Fel4B at 4.2 K are 22.0x106 and 11.0x106 J/m3, respectively, and those at 280 K are 6.1x106 and 1.0x106 J/m3, respectively