NMR Study of Al Small Particle

Abstract

NMR measurement was done in Al small particles in high magnetic field (<36 kOe) and at low temperatures (>0.5 K). The Knight shift varied linearly with temperature and the spin-lattice relaxation time was much longer than that in bulk material. The effects of the superconductivity and the level quantization are discussed and the observed anomalies are attributed mainly to the latter.