A ferromagnetic-polymer composite material comprises a polymer and a plurality of ferromagnetic film platelets disposed in the polymer. Each ferromagnetic film platelet comprises first and second insulator layers and a ferromagnetic layer disposed between the first and second insulator layers. The ferromagnetic layer can be magnetically anisotropic in which a hard axis of magnetization is aligned parallel to a plane that passes through and parallel to an interface between the first insulator layer and the ferromagnetic layer. The easy and/or hard axes of magnetization in the ferromagnetic film platelets can be aligned. An inductor can have a core formed of the ferromagnetic-polymer composite material.

The present invention relates to a relay for an electric vehicle and a method of manufacturing the same, and more particularly, a relay for an electric vehicle where a permanent magnet is integrally formed with a housing formed of a ceramic chamber, and a method of manufacturing the same. The relay, capable of rapidly executing current interruption includes: a fixed contact; a movable contact formed to contact or to be separated from the fixed contact; a shaft connected to the movable contact, and configured to move the movable contact; a housing configured to accommodate therein the fixed contact and the movable contact; an actuator configured to drive the shaft; and a permanent magnet integrally formed with the housing, and configured to extend an arc generated between the fixed contact and the movable contact. The permanent magnet includes an alnico-based material or a neodymium-based material.

A ferromagnetic-polymer composite material comprises a polymer and a plurality of ferromagnetic film platelets disposed in the polymer. Each ferromagnetic film platelet comprises first and second insulator layers and a ferromagnetic layer disposed between the first and second insulator layers. The ferromagnetic layer can be magnetically anisotropic in which a hard axis of magnetization is aligned parallel to a plane that passes through and parallel to an interface between the first insulator layer and the ferromagnetic layer. The easy and/or hard axes of magnetization in the ferromagnetic film platelets can be aligned. An inductor can have a core formed of the ferromagnetic-polymer composite material.