New Co-Fe Amorphous Alloys as Soft Magnetic Materials
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概要
- 論文の詳細を見る
Amorphous alloys of (Fe_<1-x>Co_x)_<80>P_<13>C_7 and (Fe_<1-x>Co_x)_<75>Si_<15>B_<10> Were prepared by quenching from the melt by using the centrifugal type and roller type solidification techniques. Specimens were all ribbons in form. Measurements were made of B-H hysteresis loops, effective permeabilities at high frequencies, longitudinal magnetostrictions, electrical resistances, specific gravities and Vickers hardnesses. These alloys are magnetically very soft. The magnetostriction is zero at a composition near x=0.94, being positive in the range of 0〓x<0.94 and negative in the range of 1〓x>0.94. The coercive force and the permeability depends on the absolute value of magnetostriction. The alloy (x=0.94) having a vanishingly small magnetostriction exhibits the best soft magnetic properties : the coercive force is 0.006 Oe, the maximum permeability is 7.0×10^5 and the effective permeability is about 7×10^3 at higher frequencies up to about 100 KHz. In addition to these, this alloy has a high Vickers hardness of 910. Possible applications of this alloy are discussed.
- 東北大学の論文
著者
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Fujimori Hiroyasu
The Research Institute For Iron Steel And Other Metals
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Fujimori Hiroyasu
The Research Institute For Electric And Magnetic Materials
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Obi Yoshihisa
The Research Institute For Iron Steel And Other Metals
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Masumoto Tsuyoshi
The Research Institute For Iron Steel And Other Metals
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KIKUCHI Michio
The Research Institute of Electric and Magnetic Alloys
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Masumoto Tsuyoshi
The Research Development Corporation Of Japan:the Research Institute For Iron Steel And Other Metals
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Fujimori Hiroyasu
The Resarch Institute For Iron Steel And Other Metals
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