メカニカルコンパウンディングによるBaM微粒子の磁気特性 Magnetic Properties of Ba-M Fine Particles Prepared by Mechanical Compounding
Ba-M ferrite fine particles were prepared by mechanical compounding method using the planetary ball-mill and subsequent heat treatment. The conditions determined as optimum for the preparation of Ba-M ferrite fine particles having a somewhat similar diameter to the single domain are as follows : chemical composition-BaO⋅5Fe<SUB>2</SUB>O<SUB>3</SUB> ; planetary ball-mill condition : 300rpm×lh ; heating condition : 1100°C×1h in air ; magnetic and physical properties are σ<SUB>s</SUB>=82.5×10<SUP>-6</SUP>wb⋅m/kg, H<SUB>cJ</SUB>=326.3kA/m, T<SUB>c</SUB>=450.6°C, lattice constant a=5.874×10<SUP>-10</SUP>m, c=23.22×10<SUP>-10</SUP>m and average particle size 0.41μm.
粉体および粉末冶金 44(1), 11-16, 1997-01-15
Japan Society of Powder and Powder Metallurgy