Coercivity enhancement in La coated Nd-Fe-B thin films

被引：4
|
作者：
Koike, Kunihiro [1 ]
Ishikawa, Hiroya [1 ]
Ogawa, Daisuke [1 ]
Kato, Hiroaki [1 ]
Miyazaki, Takamichi [2 ]
Ando, Yasuo [2 ]
Itakura, Masaru [3 ]
机构：
[1] Yamagata Univ, Yonezawa, Yamagata, Japan
[2] Tohoku Univ, Sendai, Miyagi, Japan
[3] Kyushu Univ, Kasuga, Fukuoka, Japan
来源：
20TH INTERNATIONAL CONFERENCE ON MAGNETISM, ICM 2015 | 2015年 / 75卷
关键词：
Nd2Fe14B; La overlayer; hcp-La2O3; coercivity; MAGNETIC-PROPERTIES;
D O I：
10.1016/j.phpro.2015.12.144
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The Nd-Fe-B/La thin films were deposited on the Al2O3(0001) substrate in order to investigate the effect of rare earth overlayer on the coercivity H-c. Highly textured Nd2Fe14B grains were grown by inserting the Mo(111) single crystal buffer layer. By depositing the La overlayer onto Nd2Fe14B thin films and subsequently post-annealing at 470 degrees C, the H-c value increased from about 10.5 kOe to 15.0 kOe. The amount of H-c increase by the combination of the La coating and post-annealing was about 4.5 kOe. After the post annealing, La oxide (hcp La2O3) was formed in the La layer, which was confirmed by means of XRD and SIMS depth profile measurements.
引用
收藏
页码：1294 / 1299
页数：6
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