Raman spin–lattice relaxation time and Debye temperature studies of image in ammonium cobalt sulphate hexahydrate single crystal Original Research Article

Electron paramagnetic resonance (EPR) of Cr3+Cr3+ doped in (NH4)2Co(SO4)2·6H2O(NH4)2Co(SO4)2·6H2O single crystal has been studied using Q band EPR spectrometer to find spin–lattice relaxation time (SLRT) (T1)T1). The observation of resolved chromium spectra at room temperature has been interpreted in terms of random modulation of interaction between trivalent chromium and divalent cobalt ions by SLRT of cobalt ions. The relaxation time of the host is found to be View the MathML source6.95×10-12s using Mitsuma theory and View the MathML source9.85×10-15s using Misra et al. approach at room temperature (300 K). Debye temperature of the host lattice is evaluated using electron spin–lattice relaxation processes. It is found that the Debye temperature of the host is 110 K.