Investigations of the spin-Hamiltonian parameters for Ta4+ ions in LiTaO3 crystal

A novel contractive effect of KTaO3 nanocrystals via La3+ doping and an enhanced photocatalytic performance

“…This broadened signal may involve in the contribution of oxygen vacancies overlapped with La 3+ ions. Importantly, a signal at g = 1.65 was observed which was assigned to the existence of Ta 4+ ions [27]. Thus it is proved that the unbalance charge of K 1Àx La x TaO 3 caused by doping of La 3+ ions to substitute K + ions was preserved through the reduction of Ta 5+ ions to Ta 4+ ions.…”