%0 Journal Article
%T EFFECT OF Fe2+ ON THE LINE WIDTH OF FERRIMAGNETIC RESONANCE<br>二价铁对铁磁共振线宽的影响
%A HSU DSEN-I
%A HO YU-PING
%A <br>许政一
%A 霍裕平
%J 物理学报
%D 1965
%I 
%X The influence of Fe2+ on the ferrimagnetic resonance properties of nickel ferrites was discussed. Since the ground state of Fe2+ in spinels is a singlet, the crystal field only slightly affects the motion of the spin magnetic moment of Fe2+. It was pointed out that due to the anisotropy of the exchange interaction between Fe2+ and Fe3+ or Ni2+ situated at the octahedral position, the longitudinal branch might play the major role in the relaxation process of nickel ferrites.The method used in Ref. 1] was extended to treat the strong exchange coupled system. It was confirmed that usually the expression for the line width coincides with that of the case of a weakly coupled system.Under the light of a reasonable model of anisotropic exchange interaction the experimental fact that the line width goes through a maximum at a definite temperature along all crystal directions except 001], was satisfactorily explained. The theoretical expression obtained for the anisotropy of the line width agrees with the experimental results.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=97DEC544DCC39DAD&yid=DCB97F70EF167067&vid=659D3B06EBF534A7&iid=38B194292C032A66&sid=E543FC2C7CA75C74&eid=D647AF4730396036&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0