Development and Applications of Nanostructured Soft Magnetic Cores with Extremely Low Loss and Controlled Permeability

极低损耗可控磁导率纳米结构软磁芯的开发与应用

• 批准号: 15360170
• 负责人: FUKUNAGA Hirotoshi
• 金额: $ 9.73万
• 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: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360170/
• 关键词: Magnetic loss; Nano-materials; Electronic Materials; Creep; Electronic Devices; Permeability; Magnetism; 誘導磁気異方性; ナノ結晶材料; 透磁率制御; 応力下連続焼鈍; 高周波特性; PLD; 交換スプリング磁石; ナノ結晶; 最大エネルギー積; 保磁力; ND-Fe-B; 積層膜

A new material with controllable permeability and extremely low magnetic loss was developed through this research project. The material was prepared by the crystallization of an amorphous Fe-Nb-Si-B ribbon under tensile stress. The crystallization under tensile stress induced magnetic anisotropy perpendicular to the ribbon axis, and resulted in the linear magnetization curve up to magnetic saturation. As the magnitude of the anisotropy was proportional to the stress value, the permeability was controlled easily by changing the magnitude of the applied stress.The crystallization under tensile stress was achieved by several annealing methods. In the methods, the continuous crystallization of a moving amorphous ribbon by Joule-heating enabled us to prepare a ribbon with controlled permeability under the moving velocity exceeding 200cm/min. As the development of the anisotropy can be completed in an extremely short time less than 1 sec, the continuous crystallization under a faster moving velocity is expected by improving apparatus for crystallization.Toroidal cores were obtained from a developed ribbon, and their magnetic properties were evaluated at the frequencies up to 2MHz. The prepared cores exhibited superior soft magnetic properties reflecting the magnetic properties of the ribbon, when their diameters were larger than a critical value which was determined from the saturation magnetostriction, Young modulus, and the thickness of the ribbon. Permeability of a core could be controlled at a value of a several hundreds and was constant up to 2MHz. Magnetic loss of the obtained cores was 1/3 of that of a ferrite core. The DC-bias filed applicable to the cores without deterioration of magnetic properties was 3 times as large as that of a ferrite core, which can be attributed to the large saturation magnetization of the developed material.

通过本课题的研究，开发出了一种磁导率可控、磁损耗极低的新型材料。该材料是由非晶Fe-Nb-Si-B薄带在拉伸应力下晶化制备的。在拉应力作用下的晶化诱导了垂直于带轴方向的磁各向异性，并导致了线性磁化曲线达到磁饱和。由于各向异性的大小与应力大小成正比，因此可以通过改变应力的大小来控制磁导率的大小。在这些方法中，通过焦耳加热移动非晶带的连续晶化使我们能够在超过200 cm/min的移动速度下制备具有受控磁导率的带。由于各向异性的发展可以在不到1秒的极短时间内完成，通过对结晶装置的改进，使结晶过程在更快的移动速度下连续进行。开发的薄带，并在高达2 MHz的频率下评估它们的磁性。所制备的芯表现出优越的上级软磁性能，反映了磁性能的带，当它们的直径大于一个临界值，这是由饱和磁致伸缩，杨氏模量，和带的厚度。磁芯的磁导率可以控制在几百个值，并且在2 MHz以下是恒定的。所得磁芯的磁损耗为铁氧体磁芯的1/3。适用于磁芯的直流偏置磁场没有磁性能的恶化是铁氧体磁芯的3倍，这可以归因于所开发的材料的大饱和磁化强度。

项目成果

Nanocrystallization and Magnctic Properties of Fe_<85.4>Zr_<6.8-x>M_xB_<6.8>Cu_1 (X=0 or 1; M=Nb, Nd or Mo) A11oys

Fe_<85.4>Zr_<6.8-x>M_xB_<6.8>Cu_1（X=0或1；M=Nb、Nd或Mo）Al1oys的纳米晶化及磁性

• 发表时间: 2004
• 期刊: Journal of Magnetism and Magnetic Materials Vol. 272-276
• 作者: J.Olszewski;H.Fuklmagab et al.
• 通讯作者: H.Fuklmagab et al.

M.Ohnuma, K.Hono, T.Yanai, H.Fukunaga, Y.Yoshizawa: "Direct evidence for structural origin of stress-induced magnetic anisotropy in Fe-Si-B-Nb-Cu nanocrystalline alloys"Appl.Phys Lett.. Vol.83 No.14. 2859-2861 (2003)

M.Ohnuma、K.Hono、T.Yanai、H.Fukunaga、Y.Yoshizawa：“Fe-S​​i-B-Nb-Cu 纳米晶合金中应力诱导磁各向异性结构起源的直接证据”Appl.Phys Lett。

Nanocrystallization and magnetic properties of Fe_<85.4>Zr_<6.8-x>MxB_<6.8>Cu_1(X=0 or 1; M=Nb, Nd or Mo) alloys

Fe_<85.4>Zr_<6.8-x>MxB_<6.8>Cu_1(X=0或1;M=Nb、Nd或Mo)合金的纳米晶化及磁性能

• 发表时间: 2004
• 期刊: Journal of Magnetism and Magnetic Materials 272-276
• 作者: J.Olszewski;H.Fukunaga;J.Zbroszczyk;W.Ciurzynska;K.Perduta;P.Bragiel;M.Piasecki;J.Lelatko;M.Hasiak
• 通讯作者: M.Hasiak

J.Olszewski, H.Fukunaga, 他7名: "Nanocrystallization and Magnetic Properties of Fe_<85.4>Zr_<6.8-X>M_XB_<6.8>Cu_1 (X=0 or 1;M=Nb, Nd or Mo) Alloys"J.Magn.Magn.Mater.. in press. (2004)

J.Olszewski、H.Fukunaga 等 7 人：“Fe_<85.4>Zr_<6.8-X>M_XB_<6.8>Cu_1（X=0 或 1；M=Nb、Nd 或 Mo）合金的纳米结晶和磁性” J.Magn.Magn.Mater.. 正在出版（2004 年）。

Investigation of development process of creep-induced anisotropy in nanocrystalline Fe_<73.5>Cu_1Nb_3S_<115.5>B_7 ribbon for mass production

量产纳米晶Fe_<73.5>Cu_1Nb_3S_<115.5>B_7带材蠕变各向异性发展过程研究

• 发表时间: 2004
• 期刊: SMM 16/Special 16/Special Issue of Conference Proceedings 2
• 作者: T.Yanai;M.Yamasaki;K.Takahashi;M.Nakano;H.Fukunaga;Y.Yoshizawa
• 通讯作者: Y.Yoshizawa