I fabricated some memristors but when I try to form them for the first time they broke down. The structure of memristors is Ta/TaOx/Pt. TaOx layer is about 6-8 nm and two electrodes are circa 200nm. I read some papers to find out how it should be but I am not for sure if I do the exact procedure or not. I'd deeply appreciate if someone can explain how to form a memristor explicitly.