| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a process for manufacturing a W type ferrite compound with which a spinel compound does not coexist when an anisotropic W type hexagonal system ferrite is manufactured. <P>SOLUTION: The process for manufacturing the W type ferrite comprises formulating an M type ferrite compound and a spinel type compound in a compositional ratio corresponding the W type ferrite compound to obtain a mixed powder, then conducting the powder metallurgy molding of the mixed powder, firing and further pulverizing the same if desired. The W type ferrite may be a compound having the composition represented by formula: A[Zn<SB>2(1-x)</SB>(LiFe)<SB>x</SB>]Fe<SB>18</SB>O<SB>27</SB>(wherein, A is Sr or Ba, x=0-0.5). <P>COPYRIGHT: (C)2005,JPO&NCIPI |
