| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique for easily obtaining a W-type ferrite material and the like that combine remanent flux density Br and coercive force HcJ larger than before. <P>SOLUTION: In ferrite magnet powder expressed by the composition formula AZn<SB>a(1-x)</SB>Ni<SB>ax</SB>Fe<SB>b</SB>O<SB>27</SB>(where A is at least one or more of Sr, Ba, Ca and Pb), it is assumed that 0.05≤x≤0.70, 1.3≤a≤1.8, and 14≤b≤17. In this way, Ni is substituted for a part of the Zn site in the Zn-W type ferrite in a certain range, thereby obtaining high remanent flux density Br and coercive force HcJ. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
