Nuclear Spin-Lattice Relaxation in Amorphous Materials:B2O3

Abstract
The temperature and frequency dependence of the nuclear spin-lattice relaxation in amorphous B2 O3 has been investigated and a T1 minimum with unusual properties has been discovered at ∼300 K. The relaxation is described in detail by Raman-like processes involving the two-level disorder modes and phonons characteristic of glassy materials.