The Effect of Hydrostatic Pressure on the Magnetic Anisotropy of Ferrous and Ferric Ions in Ferrites with Spinel Structure

概要

論文の詳細を見る
The first order magnetic anisotropy constant K_1 of eight ferrites with in-verse-type spinel structure and two ferrites with normal-type has been measured under hydrostatic pressure by the use of a torque method. The pressure dependence of K_1, K^<-1>_1(dK_1/dp), in Li_<0.5>Fe_<2.5>O_4 is+4.1×10^<-6> bar^<-1>, in NiFe_2O_4 is +3.3×10^<-6> bar^<-1>, in Li_<0.05>Fe_<2.95>O_4 is -18.0×10^<-6> bar^<-1>, in Fe_3O_4 is -13.5×10^<-6> bar^<-1>, in Fe_<2.96>Ti_<0.04>O_4 is -9.4×10^<-6> bar^<-1>, in Fe_<2.90>Ti_<0.10>O_4 is -6.5×10^<-6> bar^<-1>, in Fe_<2.82>Ti_<0.18>O_4 is -1.4×10^<-6>bar^<-1>, in Fe_<2.69>Ti_<0.31>O_4 is +3.0×10^<-6>bar^<-1>, in MnFe_2O_4 is +7.0×10^<-6>bar^<-1>, in Mn_<0.6>Zn_<0.2>Fe_2O_4 is +6.0×10^<-6>bar^<-1> at room temperature. The results are discussed with regard to a single-ion model. In spinel, the contribution of ferrous ion to anisotropy constant K_1 increases, and that of ferric ion decreases, with decreasing lattice constant under hydrostatic pressure.
社団法人日本物理学会の論文
1968-07-05