| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hard magnetic composition which is capable of easily producing a ThMn<SB>12</SB>phase even if Nd is used as a rare earth element. <P>SOLUTION: The hard magnetic composition is represented by formula, R(Fe<SB>100-y-w</SB>Co<SB>w</SB>Ti<SB>y</SB>)<SB>x</SB>Si<SB>z</SB>A<SB>v</SB>(wherein, R denotes one or more rare earth elements containing Y, and 50 mol% or above of R is Nd; and A is N and/or C), and the mol ratios of the component elements in the formula are as follows: x is 10 to 12.5, y is (8.3-1.7×z) to 12, z is 0.2 to 2.3, v is 0.1 to 3, and w is 0 to 30, and (the sum of mol ratios of Fe, Co, Ti, and Si)/(mol ratio of R) is so set as to be above 12, whereby a single-phase structure having a ThMn<SB>12</SB>phase can be obtained. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
