Nuclear Magnetic Resonance Study of the Raman Spin-Phonon Processes in the Relaxation Mechanisms of Double Sulfate Li₃Rb(SO₄)₂Single Crystals

Abstract

Rb nuclei in the crystals were found to increase with increasing temperature, and can be described by the relation T 1The dominant relaxation mechanism for these nuclei with electric quadrupole moments is provided by the coupling of these moments to the thermal fluctuations of the local electric field gradient via Raman spin-phonon processes.