Different Crystal Chemistries of the 117Cd→117In and 111mCd→111Cd Probes in LiNbO3 and LiTaO3 Studied by the Time-Differential Perturbed-Angular-Correlation Technique

Key Points

• The aim is to investigate the crystal chemistries of cadmium probes in LiNbO3 and LiTaO3 to understand their ferroelectric properties.
• Analyzed temperature dependences of nuclear-electric-quadrupole frequency vQ.
• Used 117In and 111Cd as dopants in LiNbO3 and LiTaO3 materials.
• Employed time-differential perturbed-angular-correlation technique.
• Order-disorder of Li ions is not the main factor causing ferroelectric instability.
• Oxygen order-disorder is identified as the driving mechanism.
• Significant differences in temperature dependence of vQ between 111Cd and 117In indicate a dynamic character.