Patent ID: 8729522

Claim:
A memory construction, comprising: a first material; a film of phase change material over and directly against the first material; a second material over and directly against the film of phase change material and spaced from the first material by less than or equal to about 10 nanometers; wherein an entirety of the film between the first and second materials has a thickness of less than or equal to about 10 nanometers; wherein the memory construction is configured to transition from one memory state having a first phase of the phase change material to a second memory state having a second phase of the phase change material, and is configured so that an entirety of the phase change material film changes from the first phase to the second phase in transitioning from the first memory state to the second memory state; and wherein at least one of the first and second materials comprises carbon, W, TiN, TaN or TiAlN; where the formulas of the listed compounds indicate the components within the compounds rather than designating specific stoichiometries.