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. 2021 Nov 24;12:6814. doi: 10.1038/s41467-021-26739-1

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© The Author(s) 2021, corrected publication 2022

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Fig. 1 — a Calculated Gibbs free energy for oxygen vacancy formation (G_vf-O) of Pr_0.5(Ba/Sr)_0.5TO_3−δ (T = Mn, Fe, Co, and Ni) from the surface AO (green bar) and BO₂ (purple bar) networks and the predicted phase change under reducing condition. b Schematic illustration of the most stable structure configurations of Pr_0.5(Ba/Sr)_0.5TO_3−δ (T = Mn, Fe, Co, and Ni) slab models used for the calculations of oxygen vacancy formation energy values from AO and BO₂ networks.