Effect of Preparation Condition on Magnetic Properties of Nd-Fe-B/α-Fe Multi-Layered Thick Film-Magnets Prepared by PLD Method

被引：5

作者：

Fukunaga, Hirotoshi ^{[1
]}

Kamikawatoko, Takashi ^{[1
]}

Tou, Akinori ^{[1
]}

Nakano, Masaki ^{[1
]}

Yanai, Takeshi ^{[1
]}

Yamashita, Fumitoshi ^{[2
]}

机构：

[1] Nagasaki Univ, Nagasaki 8528521, Japan

[2] Minebea Co Ltd, Rotary Component Technol Dev Div, Shizuoka 4371193, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2012年 / 48卷 / 11期

基金：

日本科学技术振兴机构;

关键词：

Layered structure; nanocomposite magnet; Nd-Fe-B; pulse laser deposition (PLD) method; thick film-magnet;

D O I：

10.1109/TMAG.2012.2206073

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Nd - Fe - B/alpha - Fe multi-layered thick film-magnets were synthesized by pulse laser deposition (PLD) method from a Nd2.4Fe14B/alpha-Fe composite target. In order to improve magnetic properties and their reproducibility, effects of the stacking period of Nd - Fe - B/alpha - Fe layers, t(p), the target-substrate distance, D-TS, and the laser beam energy on a target, E-L, In particular, the standard deviation of the Nd content was suppressed within 3%, when E-L was reduced from a value higher than 200 mJ/mm(2) to 25 mJ/mm(2). An increase in D-TS and selection of a suitable t(p) value improved the maximum energy product (BH)(max). The largest (BH)(max) value obtained in this investigation was 112 kJ/m(3), which is higher than the values reported previously for isotropic film-magnets thicker than 10 mu m. Origins of superior magnetic properties were discussed from the viewpoints of suitable interlayer exchange interaction between Nd-Fe-B and alpha-Fe layers and morphology of prepared film-magnets.

引用

页码：3154 / 3157

页数：4

共 17 条

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