MAGNETIC AFTEREFFECT OF ND-FE-B SINTERED MAGNETS
MAGNETIC AFTEREFFECT OF ND-FE-B SINTERED MAGNETS
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DOI：
10.1109/20.92376
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发表时间：
1988-11-01
影响因子：
2.1
通讯作者：
NISHIO, H
中科院分区：
文献类型：
--
作者：
NISHIO, H
在 J-H 退磁曲线上测量了 Nd-Fe-B 烧结磁体在 200 至 500 K 温度范围内的磁后效应常数 S/sub v/ 的磁场和温度依赖性。发现S/sub v/在H/sub m/至H/sub cJ/范围内是恒定的且与磁场无关。 S/sub v/ 在 200 至 500 K 之间随着温度升高而线性减小，并且在 H/sub cJ/ 大的材料中更大。 Nd-Dy-Fe-B 和 Nd-Fe-Co-B 烧结磁体的 S/sub v/ 温度依赖性与 SmCo/sub 5/ 磁体不同，与 Sm/sub 2/Co/sub 17/ 烧结磁体相似。然而，Nd-Fe-Co-B烧结磁体的S/sub v/值比Sm/sub 2/Co/sub 17/磁体大约2.5至3倍。<>
The magnetic field and temperature dependences of the magnetic aftereffect constant S/sub v/ were measured for Nd-Fe-B sintered magnets in the temperature range between 200 and 500 K on a J-H demagnetizing curve. It was found that S/sub v/ is constant and independent of the magnetic field in the range from H/sub m/ to H/sub cJ/. S/sub v/ decreases linearly between 200 and 500 K as the temperature increases and is larger in materials whose H/sub cJ/ is large. The temperature dependence of S/sub v/ for Nd-Dy-Fe-B and Nd-Fe-Co-B sintered magnets differs from that in SmCo/sub 5/ magnets and is similar to that in Sm/sub 2/Co/sub 17/ sintered magnet. However, the value of S/sub v/ for Nd-Fe-Co-B sintered magnet is larger than that of Sm/sub 2/Co/sub 17/ magnets by roughly 2.5 to 3 times.<>