Patent ID: 8569729
Filing Date: 2013-10-29
Classification: H01L

Abstract:
1. A phase-change memory, comprising: a first electrode, said first electrode having a first surface; a second electrode disposed over said first electrode, said second electrode having a second surface, said second surface facing said first surface; a phase-change material electrically coupled to said first and second electrodes, said phase-change material being disposed between said first surface of said first electrode and said second surface of said second electrode, said phase-change material having a first cross-section parallel to said first surface, said phase-change material having a non-uniform composition over said first cross-section, said first cross-section including a first region having a first composition and a second region having a second composition, said first composition consisting essentially of the chemical elements present in said second composition, said first composition including said elements in a different proportion than said second composition.