Matgnetic core including Fe-based glassy alloy

摘要

A magnetic core includes a magnetic core body composed of an Fe-based soft magnetic glassy alloy having a temperature difference DELTA Tx of a supercooled liquid of 20 DEG C or more, DELTA Tx being expressed by the equation, DELTA Tx = Tx - Tg (where Tx is the crystallization temperature and Tg is the glass transition temperature) and a resistivity of 1.5 mu OMEGA m or more. The Fe-based soft magnetic glassy alloy contains at least one metallic element selected from the group consisting of aluminum, gallium, indium, and tin, and at least one metalloid element selected from the group consisting of phosphorus, carbon, boron, germanium, and silicon. The magnetic core body is fabricated by toroidally winding a thin ribbon of the Fe-based soft magnetic glassy alloy or by laminating thin ribbons of the Fe-based soft magnetic glassy alloy, or the magnetic core body is a bulk magnetic core body. <IMAGE>