Effect of Preparation Condition on Magnetic Properties of [Formula Omitted] Multi-Layered Thick Film-Magnets Prepared by PLD Method

[Formula Omitted] multi-layered thick film-magnets were synthesized by pulse laser deposition (PLD) method from a [Formula Omitted]-Fe composite target. In order to improve magnetic properties and their reproducibility, effects of the stacking period of [Formula Omitted] layers, [Formula Omitted], the target-substrate distance, [Formula Omitted], and the laser beam energy on a target, [Formula Omitted], on them were studied. The reproducibility of magnetic properties was improved significantly by decreasing [Formula Omitted]. In particular, the standard deviation of the Nd content was suppressed within 3%, when [Formula Omitted] was reduced from a value higher than 200 [Formula Omitted] to 25 [Formula Omitted]. An increase in [Formula Omitted] and selection of a suitable [Formula Omitted] value improved the maximum energy product [Formula Omitted]. The largest [Formula Omitted] value obtained in this investigation was 112 [Formula Omitted], which is higher than the values reported previously for isotropic film-magnets thicker than 10 [Formula Omitted]. Origins of superior magnetic properties were discussed from the viewpoints of suitable interlayer exchange interaction between Nd-Fe-B and [Formula Omitted]-Fe layers and morphology of prepared film-magnets.