Correlations Between Superconductivity and Nuclear Magnetic Resonance Properties

Abstract

The Knight shifts, line widths, and quadrupole interactions in a series of vanadium intermetallic compounds were measured using the nuclear magnetic resonance (NMR) technique. All the compounds had the beta -wolfram structure with a composition V/sub 3/X, where X was As. Au. Co, Ga, Ge, Ir, Pt, Sb, and Si. Certain striking correlations were revealed between the NMR properties and the superconducting transition temperatures of these compounds and are represented graphically. The measurements were made at 4 to 400 deg K using 400- mesh particles. (B.O.G.)