In this study, pulsed NMR is used to probe the hyperfine
interactions in liquid Se₀₅Te₀₅ doped with 3% Ga over the
temperature range from 500 °C to 900 °C. Both resonance shifts and
relaxation times are determined for ⁷⁷Se, ⁷¹Ga and ⁶⁹Ga.
NMR on both Ga-isotopes allows one to measure...
Perturbed angular correlation (PAC) spectra of fully yttria-stabilized (cubic) zirconia with Y₂0₃ contents of 35.4 wt. %, 27.8 wt. %, and 16.9 wt. %, respectively, were measured using the isotope ¹⁸¹Ta as probe nucleus. PAC spectra in cubic zirconia are characterized by a wide frequency distribution due to contributions of...
YBa₂Cu₃0₇₋x was doped with In by a stoichiometrically exact substitution of
Y by In, doping levels ranging from 0% to 20%. Room temperature X-ray diffraction
measurements, Perturbed Angular Correlation spectroscopy using ¹¹¹Cd as nuclear
tracer at a variety of temperatures ranging from room temperature to 950°C and magnetic
flux exclusion...
Perturbed angular correlation (PAC) spectroscopy of dilute zirconia alloys
and YBa₂Cu₃0₇₋x, ceramic superconductors at elevated temperature have been
measured using ¹¹¹Cd as the probe.
The oxygen vacancy concentration in the zirconia samples was controlled by
doping with yttrium or indium, which introduce vacancies, or with niobium, which
removes vacancies. A...