DUST CORE, COIL COMPONENT, AND METHOD FOR PRODUCING DUST CORE

摘要

Provided is a construction that is suitable for reducing core loss in a dust core made by using a soft magnetic material powder, and in a coil component using the dust core. This dust core made by using a soft magnetic material powder is characterized in that Cu is dispersed among said soft magnetic material powder. Preferably, the dust core is characterized in that: said soft magnetic material powder is a pulverized powder of a soft magnetic alloy ribbon; and Cu is dispersed among said pulverized powder of said soft magnetic alloy ribbon. Further, preferably, the dust core is characterized in that: said soft magnetic alloy ribbon is an Fe-based alloy ribbon that develops an Fe-based nano-crystalline alloy ribbon or an Fe-based nano-crystalline structure; and said pulverized powder has a nano-crystalline structure.