A new type of phase change memory made of antimony

Subject: General Tech | June 26, 2018 - 01:17 PM |
Tagged: phase change memory, PCM, antimony

Researchers from IBM and a German university have come up with a new way of creating phase change memory which should be far more effective than the current process.  Current PCMs are made from a complex alloy of materials in order to limit the amount of energy required to flip their state to ensure temperatures do not build up, which leads to a scalabilty issue.  As memory cells shrink, the purity of the alloy needs to be improved as even a single wandering atom could render the cell unusable.  These researchers have created PCM cells between 3 and 10 nm thick using pure antimony separated by SiO2 layers of insulation that are 40-200-nm thick which can change state in a mere 50 nanoseconds.

There is still a long way to go, the process they used creates a form of antimony which remains stable for 51 hours, at a temperature of 20C which is not quite good enough for prime time but could lead to usable materials in the future.  Drop by physicsworld for more coverage.

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"Monatomic glassy antimony might be used as a new type of single-element phase change memory. This is the new finding from researchers at IBM Research-Zurich and RWTH Aachen University who say that their approach avoids the problem of local compositional variations in conventional multi-element PCMs. This problem becomes ever more important as devices get smaller."

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Source: physicsworld

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June 27, 2018 | 04:12 PM - Posted by quest4glory

My worst memory was made from alimony. Heyyooooo.

June 28, 2018 | 11:24 PM - Posted by Tomas Van Eccelpoel (not verified)

ram is always antimoney for my wallet

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