%0 Journal Article
%T EXCHANGE COUPLING AND COERCIVITY OF NANO CRYSTALLINE Nd4.5(Fe, Ga, Co)77.5B18 BONDED MAGNETS<br>纳米复合Nd4.5(Fe,Ga,Co)77.5B18磁体的矫顽力和交换耦合作用
%A ZHU Minggang
%A LI Wei
%A LI Xiumei
%A GUO Yongquan
%A <br>朱明刚
%A 李卫
%A 李岫梅
%A 郭永权
%J 金属学报
%D 2003
%I 
%X The microstructure and coercivity of nanocomposite Nd4.5Fe76.5-xGaxCo1.0B18 (x=0- 0.6 (atomic fraction, %)) bonded magnets were studied. The results show that addition of small amount of Ga in Nd4.5Fe76.5-xGaxCo1.0B18 makes the grains finer and more uniform. A notable peak of coercivity was observed on the variation curve of coercivity with annealing time when Ga content is low (x=0.2). This phenomenon could be explained by the microstructure and the exchange coupling interaction of two-phase nanocomposite.
%K Nd4
%K 5(Fe
%K Ga
%K Co)77
%K 5B18
%K nanocomposite magnet
%K coercivity
%K exchange coupling<br>纳米复合磁体
%K 矫顽力
%K 交换耦合
%K 粘结磁体
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=EF94E6AA9AA87F87&yid=D43C4A19B2EE3C0A&vid=7C3A4C1EE6A45749&iid=0B39A22176CE99FB&sid=F9F74EC1AA08A7B9&eid=1D67BE204FBF4800&journal_id=0412-1961&journal_name=金属学报&referenced_num=4&reference_num=12