Isotropic thick film magnets prepared by using high purification and texture control

为了进一步提升小电机的转矩，提高各向同性薄膜的残留值是必不可少的。因此，本研究采用脉冲激光沉积（PLD）方法制备了具有分散结构的纳米复合Nd-Fe-B/ α - fe厚膜。我们特别关注通过控制激光束的焦点来减小液滴的大小和/或数量。结果，我们成功地获得了Nd-Fe-B纳米复合厚膜磁体，其剩磁、矫顽力和（BH）最大值分别约为1.0 T、400 kA/m和100 kJ/m3。

In order to upgrade the torque of the small motor further, increase in the remenence value of the isotropic films is indispensable. In this study, therefore, we prepared nano-composite Nd-Fe-B/Alpha-Fe thick-films with dispersion structure by using a PLD (Pulsed Laser Deposition) method. In particular, we focused on the reduction in size and/or numbers of droplets by controlling the focus of laser beam. Resultantly, we succeeded in obtaining a Nd-Fe-B nano-composite thick film magnet with remanence, coercivity and (BH)max values of approximately 1.0 T, 400 kA/m and 100 kJ/m3, respectively.