Figure 2

Electrical properties of Cr2O3 thin films on V2O3 electrodes. (a) Mean resistivity of 60 nm thick Cr2O3 (blue), 30 nm thick Cr2O3 (yellow) on (0001)-oriented V2O3/Al2O3 and 70 nm thick Cr2O3 on (111)-oriented Pt/Ti/YSZ (orange). 60 nm thick single crystal Cr2O3 reaches the bulk resistivity values (dashed black line). Error bars represent the standard deviation. (b) Electrical breakdown of low leakage devices in 60 nm thick Cr2O3 (top panel), 30 nm thick Cr2O3 on V2O3/Al2O3 (middle panel), and 70 nm thick Cr2O3 on Pt/Ti/YSZ (bottom panel) at different electrode diameters.