| 简介 |
PROBLEM TO BE SOLVED : To provide a high performance ferrite magnet having high Br and high squareness ratio Hk/iHc by forming microstructure in which La and/or Co are distributed ununiformly. SOLUTION : This ferrite magnet has main component composition shown by (A1-xRx)O.n[(Fe1-yMy)2O3] (atomic percentage), (where A is Sr and/or Ba, R is at least one kind of rare earth elements containing Y and surely contains La, M is Co or Co and Zn, and (x), (y) and (n) are numerals which satisfy conditions 0<=n<=6.4, 0.01<=x<=0.4 and 0.005<=y<=0.04, respectively), and has a magnet plumbite type crystal structure practically. A low concentration region of La or Co exists in a range in which at least a circle whose diameter is 0.2 μm is accommodated. |
客服热线：
手机版
二维码
