Abstract
NMR spectra and are reported for two samples of with superconducting transitions at =95 K and =80 K, respectively. The spectra are characteristic powder patterns with large anisotropic shifts: 3=-0.43% and -0.52%, respectively, for the two samples at room temperature with negligible temperature dependence below . The isotropic Knight shifts were of order =+0.11% with respect to a Hg( aqueous solution. The relaxation rate is Korringa-like above while below the relaxation rate drops down exponentially without enhancement near .
DOI:https://doi.org/10.1103/PhysRevB.50.651
©1994 American Physical Society