Abstract
The doping phenomena of Ho in BaTiO3 (BT) were investigated with a newly-developed water-soluble precursor method which is based on citrate-peroxotitanate complex and barium citrate. XRD and SEM-EDS showed that the solubility limits of Ho in the A, B and AB sites were about 1, 5 and >10 at %, respectively. EXAFS showed that the coordination environments around Ho were distorted when Ho replaced in the Ba site.