Bipolar switching of phase change device

Static information storage and retrieval – Systems using particular element – Amorphous

Reexamination Certificate

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C365S148000

Reexamination Certificate

active

08077505

ABSTRACT:
Memory devices and methods for operating such devices are described herein. A method as described herein includes applying a reset bias arrangement to a memory cell to change the resistance state from the lower resistance state to the higher resistance state. The reset bias arrangement comprises a first voltage pulse. The method further includes applying a set bias arrangement to the memory cell to change the resistance state from the higher resistance state to the lower resistance state. The set bias arrangement comprises a second voltage pulse, the second voltage pulse having a voltage polarity different from that of the first voltage pulse.

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