Rare earth permanent magnets prepared by hot deformation process
Chen Ren-Jie1, †, Wang Ze-Xuan1, Tang Xu1, Yin Wen-Zong1, Jin Chao-Xiang1, Ju Jin-Yun1, Lee Don2, Yan A-Ru1, ‡
       

SEM photos of HD magnets prepared at the HD temperature of (a) 780 °C, (b) 820 °C, (c) 840 °C, and (d) 860 °C. The white arrows represent the easy magnetization direction (c-axis) which is perpendicular to the plane of platelet grains.