Hi everyone,
According to Hume-Rothery rules, the ionic radii difference should be less than or equal to 15% for the dopant to be substitutional.
When I dope a higher ionic radius with a difference (eg. > 20%) in A-site of ABO3 perovskite structure. I want to know the criteria for the formation of interstitial or substitutional defect?
Assuming the solubility of solute in the solvent i.e., there is no formation of dopant related oxides as an impurity phase.
Thanks in advance..