With the introduction of Ga3+ ions, the oxygen ion migration activation energy of Na0.52Bi0.47TiO3-δ compounds tends to increase. The oxygen relaxation height of the Na0.52Bi0.47Ti1-xGaxO3-δ sample decreases with the increase of Ga3+ doping concentration, indicating that with the increase of Ga3+ doping concentration, the mobile oxygen vacancy content of the sample decreases.
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