公开(公告)号：KR1020050015816A

公开(公告)日：2005-02-21

申请号：KR1020030054788

申请日：2003-08-07

Applicant: 충남대학교산학협력단

Inventor： 김철기 ,  김종오 ,  임영우

IPC: H01F1/03

Abstract: PURPOSE: A low loss magnetic material having negative coercivity is provided to reduce energy loss by using negative coercivity caused by an anti-ferromagnetic coupling between crystalline and amorphous phases. CONSTITUTION: A small loss magnetic material having negative coercivity includes grid-shaped crystalline phases formed by applying heat in an amorphous magnetic material. An anti-ferromagnetic coupling is induced between the amorphous phase and the crystalline phase in the magnetic material such that an effective coercivity of the two phases is less than a sum of respective coercivity of each of the two phases. The following relation is satisfied, Hc=Hc1*Vcr+Hc2(1-Vcr). Hc1 and Vcr are the coercivity and a volume ratio of the crystalline phase, respectively. Hc2 is the coercivity of the amorphous phase.

Abstract translation: 目的：提供具有负矫顽力的低损耗磁性材料，以通过使用由结晶相和非晶相之间的反铁磁耦合引起的负矫顽力来减少能量损失。 构成：具有负矫顽力的小损耗磁性材料包括通过在非晶磁性材料中加热而形成的格子状结晶相。 在磁性材料中的非晶相和结晶相之间引起反铁磁耦合，使得两相的有效矫顽力小于两相各自的矫顽力之和。 满足以下关系：Hc = Hc1 * Vcr + Hc2（1-Vcr）。 Hc1和Vcr分别是结晶相的矫顽力和体积比。 Hc2是非晶相的矫顽力。