NV Memory Selectors: Forming the Known Unknowns (Part 5)

Phto of Ron Neale, Renowned Phase-Change Memory ExpertIn this final part of a five-part series, contributor Ron Neale continues his analysis of selector technologies focusing on the nature of the mystery of Forming and a number of the many unanswered questions.


Any search for Forming-Free structures might find some help in the article by Antonin Verdy of Leti titled: Optimized Reading Window for Crossbar Arrays Thanks to Ge-Se-Sb-N-based OTS Selectors.  This article also Continue reading “NV Memory Selectors: Forming the Known Unknowns (Part 5)”

DRAM Prices Hit Historic Low

Red line showing weekly DRAM prices over the course of 2019, where they have fallen from $6.10 to $2.59Everyone knows that DRAM prices have been in a  collapse since early this year, but last week DRAM prices hit a historic low point on the spot market.  Based on data the Memory Guy collected from spot-price source InSpectrum, the lowest spot price per gigabyte for branded DRAM reached $2.59 last week.  This is lower than the prior low of $2.62 last July, which equaled an earlier $2.62 record set in June, 2016.  See the  figure Continue reading “DRAM Prices Hit Historic Low”

NV Memory Selectors: Forming the Known Unknowns (Part 4)

Ron NealeIn this fourth part of a five-part series, contributor Ron Neale continues his analysis of selector technologies, focusing on the nature of the mystery of Forming and a number of the many unanswered questions.


From the discussion and investigations outlined in the earlier parts of this series, there would appear to be a number of options to explain selector Forming, where on the first switching event the threshold switching voltage Continue reading “NV Memory Selectors: Forming the Known Unknowns (Part 4)”