Formation of the High-Coercive State in Rare-Earth Magnets

Abstract

The effect additives of TbAl₃ hydride have on the magnetic properties and structure of sintered permanent magnets based on Pr–Fe–Co–Cu–B alloy with increased temperature stability is studied. Such magnetic properties as B_r = 1.07 T, ВН_max = 216 kJ m⁻³, _jH_c = 2000 kA m⁻¹, H_k = 1680 kA m⁻¹, H_k/_jH_c = 0.84, and α = −0.030% °С⁻¹ (in the temperature range of 20–100°C) are achieved.