Patent ID: 8853046

Claim:
A method of making a resistive memory device, the method comprising: (a) introducing a titanium precursor and a nitrogen precursor into a deposition chamber, wherein a first layer is formed on a substrate during (a), the first layer comprising titanium nitride and operable as an electrode layer of the resistive memory device; (b) gradually reducing a flow of the nitrogen precursor into the deposition chamber in comparison to (a) and gradually introducing an oxygen precursor into the deposition chamber, wherein a second layer is formed above the first layer during (b), the second layer comprising titanium oxy-nitride; (c) stopping the flow of the nitrogen precursor into the deposition chamber and gradually increasing a flow of the oxygen precursor into the deposition chamber in comparison to (b), wherein a third layer is formed above the second layer during (c), the third layer comprising titanium oxide and operable as a resistive switching layer of the resistive memory device; (d) gradually reducing the flow of the oxygen precursor into the deposition chamber in comparison to (c) and gradually introducing the nitrogen precursor into the deposition chamber, wherein a fourth layer is formed above the third layer during (d), the fourth layer comprising titanium oxy-nitride; and (e) stopping the flow of the oxygen precursor into the deposition chamber and gradually increasing a flow of the nitrogen precursor into the deposition chamber in comparison to (d), wherein a fifth layer is formed above the fourth layer, the fifth layer comprising titanium nitride and operable as an electrode layer of the resistive memory device, wherein at least (b), (c), and (d) are performed while the substrate remains in the deposition chamber.