Investigating the Structure of Ce1−xLaxCoIn5 Using NQR

We report NQR data on the heavy-fermion compound Ce x La1−x CoIn5. The NQR spectrum of the In(1) site is composed of five different peaks, which are described by a binomial distribution of the nearest-neighbor La atoms. Our results suggest that an analysis of the NQR spectra yields a more accurate doping level than energy dispersive X-ray spectroscopy (EDS) results.