Patent ID: 9305645
Filing Date: 2016-04-05
CPC Classification: G11C,H01L

Claim Text:
1. A variable resistive element which is able to transit between at least two states including a low-resistance state and a high-resistance state, the variable resistive element comprising: a first electrode including metal elements; a second electrode; a first variable resistive layer located between the first electrode and the second electrode; and a second variable resistive layer located between the first variable resistive layer and the second electrode, wherein the first variable resistive layer is made by silicon oxide, and when a thickness of the first variable resistive layer has a numerical value dm in units of nanometers [nm], a thickness of the second variable resistive layer has a numerical value dr in units of nanometers [nm], and a relative permittivity of the second variable resistive layer is defined as εr, the following formula (1) is satisfied