Patent ID: 7473612
Filing Date: 2009-01-06
Classification: G11C,H01L

Abstract:
1. A method for fabricating a variable-resistance element provided with a material layer and first and second electrodes electrically connected to the material layer, the resistance of the material layer being variable in accordance with an electric current or voltage applied across the first and second electrodes, the method comprising: (1) a first electrode production step; (2) a step of forming the material layer on the first electrode, wherein the material layer comprises an oxide semiconductor having a perovskite structure represented by the chemical formula RMCoO (3) an oxygen treatment step of heating the material layer in an oxygen atmosphere; (4) a step of forming the second electrode on the material layer that was subjected to the oxygen treatment step; and (5) a hydrogen treatment step of heating the material layer, which was subjected to the step of forming the second electrode, in a reducing atmosphere containing hydrogen.