Figure 5

(a) Current mapping on topography of the NNO-NO thin film scanned by conductive AFM. (b) Illustration of positive charged oxygen vacancies migration and electron forming diverse conductive states under different external electrical fields.
(a) Current mapping on topography of the NNO-NO thin film scanned by conductive AFM. (b) Illustration of positive charged oxygen vacancies migration and electron forming diverse conductive states under different external electrical fields.