MAGNETOCRYSTALLINE ANISOTROPY OF ER2FE14B

A rotation-magnetic-alignment method was used to align fine-powdered ( < 20 mu m) Er2Fe14B at room temperature while the easy magnetization d irection of Er(2)Fe(14)dB lies in the basal plane. X-ray diffraction w as used to check the magnetic alignment. For the first time, the tempe rature dependence of the anisotropy field of Er2Fe14B was measured in a wide temperature range from about 170 to 530 K. The anisotropy field was determined using the SPD technique in a pulsed-field magnetometer from 170 to 320 K (T-sr = 323 K) on a magnetically aligned sample and from 330 to 530 K (T-c = 550 K) on a bulk polycrystal.