低频弱磁场下180°畴壁位移引起的磁损耗  

The Eddy Current Loss Caused by the Movement of Magnetic Domain Wall

作　　者：毛兴宇[1] 

机构地区：[1]集美大学基础教学部,福建厦门361021

出　　处：《集美大学学报（自然科学版）》2001年第2期111-114,共4页Journal of Jimei University：Natural Science

基　　金：集美大学科研基金项目 (F0 62 4 8)

摘　　要：在低频弱磁场下 ,铁磁性材料中由于畴壁的振动使周围磁通量改变 ,从而在材料内部形成微观涡流 ,导致损耗 .这种因畴壁位移引起的微观涡流损耗对金属铁磁材料尤其突出 ,甚至超过通常意义下的涡流损耗 .When ferromagnetic materials are presented in a weak alternative magnetic field with low frequency,the domain walls within the materials will vibrate around their equivalent position.The eddycurrent loss caused by the movement of magnetic domain wall is discussed in this article,and the loss is comparative to or even greater than that in the material without domain wall movement.This situation is especially essential for metallic ferromagnetic materials.

关 键 词：微观涡流 畴壁位移 磁损耗 低频弱磁场 铁磁性材料 涡流损耗 

分 类 号：O482.54[一般工业技术—材料科学与工程]