Measurement of the local-moment-induced electric-quadrupole splitting of dilute 198 Au in iron by NMR on oriented nuclei

摘要: The magnetic-dipole and electric-quadrupole hyperfine splitting frequencies ${\ensuremath{\nu}}_{M}=|\frac{g{\ensuremath{\mu}}_{N}{B}_{\mathrm{hf}}}{h}|$ ${\ensuremath{\nu}}_{Q}=\frac{{e}^{2}\mathrm{qQ}}{h}$ of dilute $^{198}\mathrm{Au}$ (${j}^{\ensuremath{\pi}}={2}^{\ensuremath{-}}$; ${T}_{\frac{1}{2}}=2.7$ d) in iron were measured with nuclear magnetic resonance on oriented nuclei as 259.48(3) MHz -2.08(4) MHz, respectively. quadrupole disagrees magnitude sign the published value single-passage NMR nuclei. Taking into account known electric splittings for $^{199}\mathrm{Au}$ Fe, ratio moments is deduced to be $\frac{Q(^{198}\mathrm{Au})}{Q(^{199}\mathrm{Au})}=1.37(3)$. experimental anomalies between $^{197}\mathrm{Au}$, $^{198}\mathrm{Au}$, Fe are discussed context noncontact fields.