Electron Spin Resonance of Nd^<3+> in Cadmium Sulfide Single Crystals

概要

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The electron spin resonance study of Nd^<3+> in cadmium sulfide single crystal has been done at 1.4°K and X-band. The observed spectra consist of a strong line due to even isotopes and satellite lines coming from the hyperfine interaction with nuclei of odd isotopes. They can be explained by using the spin Hamiltonian, 〓=g_‖βH_xS_x+g_⊥β(H_xS_x+H_yS_y)+AI_zS_z+B(I_xS_x+I_yS_y) where the c-axis of thecrystal is chosen as the z-axis. The parameters are g_‖=0.43±0.05, g_⊥=3.409±0.005, |B|=(342±5)×10^<-4>cm^<-1> for ^<143>Nd, and |B|=(213±3)×10^<-4>cm^<-1> for ^<145>Nd. The crystal field around Nd^<3+> in cadmium sulfide has the symmetry of C_<3v>. The ground state (^4J_<9/2>) splits into five doublets by this crystal field. Judd's theory of Nd^<3+> in double nitrate is applied to this case to discuss the ground state of Nd^<3+> in cadmium sulfide. The ground state wave function is constructed as a linear combination, 0.2490U9/2, =5/2>±0.9685|9/2, ±1/2>. Besides Nd^<3+> resonance lines, several lines have been observed. Paramagnetic centers which are responsible for these lines are discussed.
社団法人日本物理学会の論文
1963-11-05