POUDRE DE FERRITE, COMPOSITION DE RÉSINE, MATÉRIAU DE PROTECTION ÉLECTROMAGNÉTIQUE, SUBSTRAT DE CIRCUIT ÉLECTRONIQUE, COMPOSANT DE CIRCUIT ÉLECTRONIQUE ET BOÎTIER DE DISPOSITIF ÉLECTRONIQUE

摘要

The present invention provides a powdered ferrite having high dispersibility in a resin and high electromagnetic shielding characteristics. The powdered ferrite comprises platy ferrite particles having a spinel crystal structure. The powdered ferrite comprises at least 50 number % platy ferrite particles each having at least one protrusion on a surface of the particle, and the protrusion has a shape selected from the group consisting of a rectangular pyramid, a truncated rectangular pyramid, an elongated rectangular pyramid, and combinations thereof.