Patent ID: 8921821

Claim:
A memory cell, comprising: a switching region located between a pair of electrodes, the switching region having a thickness of from about 6 angstroms to about 20 angstroms and comprising a first discrete portion and a second discrete portion, with the first discrete portion having a thickness within a range of from greater than 0 angstroms to less than 20 angstroms, each of the first discrete portion and the second discrete portion not having a non-oxygen component in common with any composition directly against the corresponding discrete portion in a high resistive state of the memory cell, each of the first discrete portion and the second discrete portions being formed by a deposition process, and at least one of the first and second discrete portions being formed by atomic layer deposition, each of the first discrete portion and the second discrete portion not having a non-oxygen component in common with any composition of any adjacent layers directly against the corresponding discrete portion.