Patent ID: 9406878
Filing Date: 2016-08-02
CPC Classification: G11C,H01L

Claim Text:
1. A memory cell, comprising: a first electrode corresponding to a first conductive line; programmable material over the first electrode, the programmable material being only two discrete layers; one of said two discrete layers being aluminum nitride with mobile ion species therein, and the other of said two discrete layers being aluminum oxide that is formed to have an excess aluminum concentration that exceeds the stoichiometric concentration of aluminum in Al a second electrode corresponding to a second conductive line that is orthogonal relative to the first conductive line, the second electrode being directly over the programmable material; the aluminum nitride being directly against one of the first and second electrodes and the aluminum oxide being directly against the other of the first and second electrodes, the programmable material being present only at an intersection where the first and second conductive lines cross; and wherein one of the first and second electrodes comprises one or both of titanium and platinum.