Nuclear magnetic resonance has been observed in the indium-rich alloys In-Cd, In-Hg, and In-Tl at 4.2°K. Measurements have been made of the isotropic Knight shift, anisotropic Knight shift, quadrupole-coupling frequency, and linewidths as a function of solute concentration to 4.7 at.% Cd, 4.3 at.% Hg, and 7.9 at.% Tl. The isotropic Knight shift exhibits a dip similar to that previously observed in In-Sn and In-Pb. The sign of the electric field gradient has been deduced from the quadrupole-coupling frequencies in the alloys, and is negative. The screening theory of Kohn and Vosko is found to describe line broadening in these indium alloys, and the enhancement factor of that theory is determined to be 85±15.

• Received 17 June 1969

DOI:https://doi.org/10.1103/PhysRevB.1.454