Phase change memory cell and manufacturing method

Details Phase change memory cell and manufacturing method Phase change memory cell and manufacturing method

2011-04-19

2011-04-19

Elms, Richard (Department: 2824)

Static information storage and retrieval

Systems using particular element

Amorphous

C365S148000

Reexamination Certificate

active

07929340

ABSTRACT:
A phase change memory cell includes first and second electrodes electrically coupled by a phase change element. At least a section of the phase change element comprises a higher reset transition temperature portion and a lower reset transition temperature portion. The lower reset transition temperature portion comprises a phase change region which can be transitioned, by the passage of electrical current therethrough, from generally crystalline to generally amorphous states at a lower temperature than the higher reset transition temperature portion. The phase change element may comprise an outer, generally tubular, higher reset transition temperature portion surrounding an inner, lower reset transition temperature portion.

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