7Li Spin-Lattice Relaxation in a LiKSO4 Single Crystal

Abstract

The temperature dependence of the 7Li relaxation time in a LiKSO4 single crystal grown by the slow evaporation method was investigated using a Bruker FT NMR spectrometer. The spin–lattice relaxation time, T1, for 7Li was found to be 2070 s at room temperature. The temperature dependence of the relaxation rate, /1T1, was fitted by the approximation /1T1 = [(2.27 × 10—6) T + (—2.1 × 10—4)] (s—1), for Li. Therefore, the linear temperature dependence of the relaxation time can be explained by the direct process of scattering with a single phonon.