| 摘要 |
PURPOSE:To manufacture a low-cost amorphous magnetic material having a small iron loss and a high squareness ratio in a high frequency region by heat- treating an amorphous alloy having a specified composition contg. Fe, B and S at a temp. below the crystallization temp. CONSTITUTION:An amorphous alloy having a composition represented by the formula (where each of x, y and z is atomic% of its element, x is 73-78, y is 8-18, z is 7-14, and x+y+z=100) is heat-treated at a temp. below the crystallization temp. The resulting amorphous magnetic material has a reduced iron loss and a high squareness ratio (residual magnetic flux density Br/ saturation magnetic flux density Bs). |
