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
相关论文
共 50 条
  • [1] Influence of Nd Oxide Phase on the Coercivity of Nd-Fe-B Thin Films
    Matsuura, Masashi
    Goto, Ryota
    Tezuka, Nobuki
    Sugimoto, Satoshi
    MATERIALS TRANSACTIONS, 2010, 51 (10) : 1901 - 1904
  • [2] Coercivity enhancement of Dy-coated Nd-Fe-B flakes by crystallization
    Fukunaga, H.
    Sugimoto, Y.
    Nakano, M.
    Yanai, T.
    Ohta, S.
    Itakura, M.
    Nishida, M.
    JOURNAL OF APPLIED PHYSICS, 2011, 109 (07)
  • [3] Enhancement of coercivity for Nd-Fe-B thin films by the infiltration of Nd-Cu alloy cap layer
    Sato, T.
    Oka, N.
    Ohsuna, T.
    Kaneko, Y.
    Suzuki, S.
    Shima, T.
    JOURNAL OF APPLIED PHYSICS, 2011, 110 (02)
  • [4] Effect of Dy/Nd double layer on coercivity in Nd-Fe-B thin films
    Koike, K.
    Umezawa, J.
    Ishikawa, H.
    Ogawa, D.
    Mizuno, Y.
    Kato, H.
    Miyazaki, T.
    Ando, Y.
    JOURNAL OF APPLIED PHYSICS, 2014, 115 (17)
  • [5] Microstructure and coercivity in La-coated Nd2Fe14B thin films
    Itakura, M.
    Fukuda, J.
    Koike, K.
    Ishikawa, H.
    Ogawa, D.
    Kato, H.
    AIP ADVANCES, 2017, 7 (03)
  • [6] Superferrimagnetism in hard Nd-Fe-B thick films, an original concept for coercivity enhancement
    Akdogan, O.
    Dobrynin, A.
    Le Roy, D.
    Dempsey, N. M.
    Givord, D.
    JOURNAL OF APPLIED PHYSICS, 2014, 115 (17)
  • [7] Microstructure optimization to achieve high coercivity in anisotropic Nd-Fe-B thin films
    Cui, W. B.
    Takahashi, Y. K.
    Hono, K.
    ACTA MATERIALIA, 2011, 59 (20) : 7768 - 7775
  • [8] A Mossbauer investigation of sputtered Nd-Fe-B thin films and Nd-Fe-B/Fe/Nd-Fe-B trilayers
    Steyaert, S
    Le Breton, JM
    Parhofer, S
    Kuhrt, C
    Teillet, J
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 : 48 - 50
  • [9] Interface state and coercivity in Nd-Fe-B/Dy films
    Jin Umezawa
    Yoshiki Sakai
    Kunihiro Koike
    Daisuke Ogawa
    Yoshiyuki Mizuno
    Hiroaki Kato
    Takamichi Miyazaki
    Yasuo Ando
    Journal of the Korean Physical Society, 2013, 63 : 616 - 619
  • [10] Interface state and coercivity in Nd-Fe-B/Dy films
    Umezawa, Jin
    Sakai, Yoshiki
    Koike, Kunihiro
    Ogawa, Daisuke
    Mizuno, Yoshiyuki
    Kato, Hiroaki
    Miyazaki, Takamichi
    Ando, Yasuo
    JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2013, 63 (03) : 616 - 619
12345