| 摘要 |
<p>A ferrite material comprising a material and Bi<SUB>2</SUB>O<SUB>3</SUB> added to the material in an amount of 6% by mass or less, preferably 4% by mass or less, the material being represented by the compositional formula: x(Li<SUB>0.5</SUB>Fe<SUB>0.5</SUB>)O·yZnO·z(Mn,Fe)<SUB>2</SUB>O<SUB>3</SUB> wherein, when there is the following definition: a= Mn/(Mn+Fe), x, y, z and a in the compositional formula and the definition satisfy the following requirements: 0.18=x=0.30, 0.20=y=0.30, 0.48=z=0.53, 0.01=a=0.25, and x+y+z=1. The ferrite material shows an extremely narrow range of variation in magnetic permeability under a high external stress and shows a small core loss even under a compressive stress. By using the ferrite material, it is possible to provide an inductor or trans which exhibits a small loss even in a resin-molded state.</p> |
