Nuclear magnetic resonance in aluminum alloys. II

Abstract

The core enhancement factor of Al is recalculated by use of Bloch wave functions, and estimates reported in our previous paper of wipe-out numbers and electric field gradients on the first and the second neighbors of impurity atoms in Al alloys are revised accordingly. The revision is found to make the existing discrepancy between theory and experiment more conspicuous. It is concluded that the scattering of Bloch waves instead of plane waves should result in an appreciable enhancement in magnitude as well as anisotropy of the screening charge distribution, and offer an ultimate solution of the problem.