The Exchange Effects on the Absorption Spectrum by the Paramagnetic Crystal with Anisotropic g-factors

Using the Fourier transform method developed by Kubo and Tomita, the effects of the exchange interaction have been studied for the absorption spectrum of the paramagnetic crystal containing two kinds of unequivalent ions with different anisotropic g -factors. The analysis has been made for the two extreme cases: (i) The exchange interaction is weak and the spectrum consists of two peaks, (ii) The exchange interaction is so strong that the two lines fuse into a single peak. Comparing with the experimental data, the values of the exchange parameters are estimated for CuSO 4 ·5H 2 O and K 2 CuCl 4 ·2H 2 O, and reasonable results have been obtained.