| abstract |
Fusiform magnetic metal particles containing iron as a main component according to the present invention,n n n The average long axis diameter L is 0.05 to 0.15 탆; Coercivity is 111.4 to 143.2 kA / m; Co content is 0.5 to less than 5 atomic percent based on total Fe; Microcrystalline size between 150 and 170 microns; Al to Co ratio is from 1.0: 1 to less than 2.0: 1; The specific surface area (S) isn n n S ≤ -160 x L + 65n n n Is indicated by; Oxidative stability (Δσs) of saturation magnetization is 5.0% or less; Moreover, the ignition temperature is 140 degreeC or more, It is characterized by the above-mentioned. Although the fusiform magnetic metal particles mainly composed of iron have fine particles, in spite of their small average diameter of about 0.05 to 0.15 μm, they exhibit suitable coercivity, excellent dispersibility, oxidation stability and coercive force distribution. |