文摘
Resistance switching properties of nanostructured Inb>2b>Ob>3b> films grown on LaNiOb>3b> (LNO) bottom electrode (BE) have been investigated for non volatile memory applications. Ag/Inb>2b>Ob>3b>/LNO/SiOb>2b> heterostructures were fabricated by pulsed laser deposition. Polycrystalline growth of oxides LNO and Inb>2b>Ob>3b> was confirmed by GIXRD, while AFM show nanostructured growth with smooth surface morphology. Two terminal I–V characteristics showed reproducible two distinct resistance states in the film and unipolar type switching. Typical resistance switching ratio (R b> on b>/R b> off b>) of the order of 112 % has been estimated at room temperature. A possible mechanism of the formation and rupture of conducting filament is proposed based on the Joule heating effect with external electron injection at the Ag/Inb>2b>Ob>3b> top interface, whereas the LNO BE acts as oxygen reservoir at the Inb>2b>Ob>3b>/LNO interface.