Ferromagnetic Resonance in Thin Films of the CrTe_<1-x>Sb_x System

概要

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A study is made of the magnetic properties of polycrystalline films of CrTe_<1-x>Sb_x(0≦x≦0.4) through ferromagnetic resonance in the temperature range from liquid nitrogen temperature to room temperature. The observation of spin wave resonance is disturbed because of the broadening of the resonance lines unless x<0.3 or the temperature is far below the Curie temperature T_c. The exchange coupling constant A in CrTe film is evaluated to be 0.37×10^<-6> erg/cm at 77 K. The value of A decreases gradually as T_c is approached or x increases. The dependence of A on temperature is generally consistent with that for Co metal given by Tannenwald and Weber or Cu-Ni alloys by Nose from spin wave resonance. The g-factor is nearly constant at low temperatures but increases rather abruptly as T_c is approached. This behavior of g is explained on the basis of two layer-sublattices with a canted spin structure.
社団法人日本物理学会の論文
1973-08-05