Magnetic Properties of Sm-Nd-Fe-Co-N Compounds and Their Bonded Magnets

IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI:10.1109/TJMJ.1994.4565984

H. Yamamoto;T. Kumanbara;T. Kojima;K. Tomii

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引用次数: 1

Abstract

Experiments were carried out to investigate the magnetic and physical properties of (Sm _1-x Nd _x ) ₂ (Fe _0.8 Co _0.2 ) ₁₇ N _y (x=0 to 0.5) in which the value of y is 3. The anisotropy field (H _A ) in (Sm _1-x Nd _x ) ₂ (Fe _0.8 Co _0.2 ) ₁₇ N _y compounds decreased linearly with increasing x, while the saturation magnetization (J _s ) increased. It was found that the H _A and J _s of a (Sm _0.9 Nd _0.1 ) ₂ (Fe _0.8 Co _0.2 ) ₁₇ N _3.07 compound were 10.4 MA/m and 193.6×10 ^-6 Wb-m/kg respectively. Anisotropic epoxy-bonded magnets were prepared from (Sm _0.9 Nd _0.1 ) ₂ (Fe _0.8 Co _0.2 ) ₁₇ N _3.07 powder with particle size ranging from 3 to 5 μm by a compression molding process. The magnetic properties of a typical bonded magnet were (BH) _max =101.8 kJ/m ³ , J _r =0.89 T, H _cJ =394 kA/m, and H _cB =314 kA/m. Magnetization jumps were observed on the hysteresis loop of a bonded magnet at 7K.

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Sm-Nd-Fe-Co-N化合物及其粘结磁体的磁性

实验研究了y值为3的（Sm1-xNdx）2（Fe0.8Co0.2）17Ny（x=0至0.5）的磁性和物理性质。（Sm1-xNdx）2（Fe0.8Co0.2）17Ny化合物的各向异性场（HA）随着x的增加而线性下降，而饱和磁化强度（Js）则增加。结果表明，a（Sm0.9Nd0.1）2（Fe0.8Co0.2）17N3.07化合物的HA和Js分别为10.4MA/m和193.6×10-6Wb-m/kg。以（Sm0.9Nd0.1）2（Fe0.8Co0.2）17N3.07粉末为原料，采用压缩成型工艺制备了粒径为3-5μm的各向异性环氧粘结磁体。典型粘结磁体的磁性能为（BH）max=101.8kJ/m3，Jr=0.89T，HcJ=394kA/m和HcB=314kA/m。在7K下，在键合磁体的磁滞回线上观察到磁化跳跃。

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IEEE Translation Journal on Magnetics in Japan

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