Patent ID: 8692222
Filing Date: 2014-04-08
Classification: G11C,H01L

Abstract:
1. A nonvolatile memory element comprising: a variable resistance element including a first electrode, a second electrode, and a variable resistance layer which is located between the first electrode and the second electrode and has a resistance value that reversibly changes based on an electrical signal applied between the first electrode and the second electrode; and a fixed resistance layer stacked together with the variable resistance element, the fixed resistance layer (i) for reducing an initial breakdown voltage of the variable resistance element in an initial state, and (ii) having a predetermined resistance value, wherein the variable resistance layer includes (i) a first transition metal oxide layer which comprises an oxygen-deficient transition metal oxide and (ii) a second transition metal oxide layer which has an oxygen content atomic percentage that is higher than an oxygen content atomic percentage of the first transition metal oxide layer, and the predetermined resistance value ranges from 70Ω to 1000Ω inclusive.