Magnetic alloy material and method of making the magnetic alloy material
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United States of America Patent
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Mar 6, 2007
Grant Date -
Apr 29, 2004
app pub date -
Aug 18, 2003
filing date -
Aug 21, 2002
priority date (Note) -
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Abstract
A method of making a magnetic alloy material includes the steps of: preparing a melt of an alloy material having a predetermined composition; rapidly cooling and solidifying the melt to obtain a rapidly solidified alloy represented by: Fe.sub.100-a-b-cRE.sub.aA.sub.bTM.sub.c where RE is at least one rare-earth element selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm and including at least about 90 at % of La; A is at least one element selected from Al, Si, Ga, Ge and Sn; TM is at least one transition metal element selected from Sc, Ti, V, Cr, Mn, Co, Ni, Cu and Zn; and 5 at %.ltoreq.a.ltoreq.10 at %, 4.7 at %.ltoreq.b.ltoreq.18 at % and 0 at %.ltoreq.c.ltoreq.9 at %; and producing a compound phase having an NaZn.sub.13-type crystal structure in at least about 70 vol % of the rapidly solidified alloy.
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