Phase-change memory cell with mixed-material switchable region

An electronic device comprising:

• a first electrode having a lowermost surface;
• a second electrode having an uppermost surface;
• and
• a memory component configured to store a resistive state, the memory component including:
• a layered region in direct contact with the first electrode, and
• a bulk region arranged in direct contact with the uppermost surface of the second electrode, wherein:
• the layered region includes a plurality of first layers made of a first material and a plurality of second layers made of a second material alternatingly arranged with one another,
• the bulk region is a continuous mass made of a third material that is different than the first material and the second material,
• the bulk region is in direct contact with at least two of the first layers and at least one of the second layers of the layered region, and
• the lowermost surface of the first electrode is substantially coplanar with the uppermost surface of the second electrode.

An electronic device comprising:

• a first electrode;
• a second electrode having an uppermost surface;
• and
• a memory component configured to store a resistive state, the memory component including a layered region arranged in direct contact with the first electrode and a bulk region arranged in direct contact with the uppermost surface of the second electrode, wherein:
• the layered region includes a plurality of first layers made of a first material and a plurality of second layers made of a second material alternatingly arranged with one another such that each first layer is in direct contact with a respective second layer at a respective planar interface surface,
• the bulk region is a continuous mass made of a third material that is different than the first material and the second material,
• the bulk region is in direct contact with at least two of the first layers and at least one of the second layers of the layered region, and
• each planar interface surface is substantially perpendicular to the uppermost surface.