Anisotropic thick film magnets prepared by high-speed PLD method and their application to an advanced and small motor

高速PLD法制备各向异性厚膜磁体及其在先进小型电机中的应用

• 批准号: 19360147
• 负责人: NAKANO Masaki
• 金额: $ 12.15万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19360147/
• 关键词: 電気; 電子材料; 磁性; PLD法; 厚膜磁石; 高速成膜; エネルギー積; マイクロモータ; ドロップレット; YAGレーザ; 異方性磁石膜; 保磁力; 添加物; 小型モータ; 高成膜速度; 基板加熱; 異方性; ミリサイズモータ

In the study, an improvement in magnetic properties of anisotropic and isotropic Nd-Fe-B film magnets was carried out by using additives. In addition, several applications comprising the films were investigated. The obtained results are as followed.(1) Anisotropic Nd-Fe-B filmsAn obtained film prepared from the Nd_<2.4>Fe_<14>B+Ga_<0.5at.%> target had the coercivity, remanence and (BH)_<max> values of approximately 850 kA/m, 0.95 T and 150 kJ/m^3, respectively. These magnetic properties are superior compared with those for the anisotropic PLD-made Nd-Fe-B films without additives. We also confirmed that the intensities of a X-ray diffraction peaks corresponding to the c-planes such as (004), (006) and (008) of the film were stronger than those of the additive-free film.(2) Isotropic film magnetsPLD-made isotroipic Nd-Fe-B thick film magnets were prepared from targets with Zr, Nb and Ga, respectively. They were crystallized by two annealing methods of conventional annealing (CA) and pulse annealing (PA), respectively. In the case of using Nd_<2.6>Fe_<14>B targets, 0.5 at.% Zr, Nb and Ga addition increased the coercivity of the film by approximately 100～300 kA/m compared with that of additive-free samples prepared by CA method. We also confirmed further increase in coercivity of the film by PA method and the obtained film prepared from a Nd_<2.6>Fe_<14>B+Ga_<0.5at.%> target had large coercivity of approximately 1700 kA/m.(3) ApplicationsWe applied the above-mentioned films to a friction-drive motor and a milli-size motor.

本研究利用添加剂改善各向异性和各向同性Nd-Fe-B薄膜磁体的磁性能。此外，还研究了包括所述膜的几种应用。所得结果如下。(1)各向异性Nd-Fe-B薄膜用Nd_<2.4>Fe_<14>B+Ga_2<0.5at.%>靶制备的薄膜的矫顽力、剩磁和（BH）_<max>值分别约为850 kA/m、0.95 T和150 kJ/m^3。这些磁性能与无添加剂的各向异性PLD制备的Nd-Fe-B薄膜相比是上级的。我们还证实，与无添加剂的膜相比，对应于膜的c-面如（004）、（006）和（008）的X射线衍射峰的强度更强。(2)用PLD法制备了各向同性Nd-Fe-B厚膜磁体。分别采用常规退火和脉冲退火两种退火方法进行晶化。在使用Nd_<2.6>Fe_<14>B靶的情况下，0.5at.% Zr、Nb和Ga的加入使薄膜的介电常数比CA法制备的样品提高了约100~300 kA/m。我们还证实了用PA法进一步提高了薄膜的矫顽力，用Nd_<2.6>Fe_<14>B+Ga_2<0.5at.%>靶制备的薄膜具有约1700 kA/m的大矫顽力。(3)应用我们将上述薄膜应用于摩擦驱动电机和毫米级电机。

项目成果

Microstructure of Anisotropic Nd-Fe-B Film Magnets Prepared by Pulsed Laser Deposition

脉冲激光沉积制备各向异性 Nd-Fe-B 薄膜磁体的微观结构

• 发表时间: 2007
• 期刊: Mater. Sci. Forum 561-565
• 作者: M.;Ishimaru・M.;Itakura・N.;Kuwano・S.;Sato・M.;Nakano・H.;Fukunaga
• 通讯作者: Fukunaga

Nd-Fe-B 系厚膜磁石の保磁力に及ぼす添加物の影響

添加剂对Nd-Fe-B厚膜磁体矫顽力的影响

• 发表时间: 2008
• 作者: 武田 浩之;柳井 武志;中野 正基;福永 博俊;山下 文敏
• 通讯作者: 山下 文敏

Anisotropic Nd-Fe-B thick film magnets prepared on various substrates

在各种基底上制备的各向异性 Nd-Fe-B 厚膜磁体

• 发表时间: 2010
• 期刊: Journal of Physics : Conference Series(ICM 2009) 200
• 作者: M Nakano;et al.
• 通讯作者: et al.

mprovement in magnetic properties of anisotropic Nd-Fe-B film magnets

各向异性 Nd-Fe-B 薄膜磁体磁性能的改善

• 发表时间: 2008
• 期刊: Proceedings 20th Workshop on Rare Earth Permanent Magnets and Applications, Creta Greece
• 作者: M. Nakano;S. Tsutsumi;H. Takeda;T. Yanai;H. Fukuaga;F. Yamashita
• 通讯作者: F. Yamashita

Cu添加を施した等方性Nd-Fe-B系厚膜磁石の磁気特性

添加Cu的各向同性Nd-Fe-B厚膜磁体的磁性能

• 发表时间: 2009
• 作者: 山路貴司;河合 晃;寺田皓祐
• 通讯作者: 寺田皓祐