Central regions | Technology & innovation

Scientists push for new way of non-volatile memory development

19 Oct '17
Russian scientists at Moscow-based Phystech (MIPT), a leading technology university, in partnership with their Korean colleagues earlier this year developed a new method which is expected to help create a promising new type of non-volatile memory.

At the heart of the technique is control of oxygen concentration in tantalum oxide films which are developed using plasma-enhanced atomic layer deposition (PEALD). The researchers have published the results of their work in English in ACS Applied Materials and Interfaces.

Resistive switching memory, or ReRAM, appears to be a promising new way of storing and processing information. Its built on technology that changes resistance in memory cells by voltages applied. So, a cells low or high resistance could be used to store data.

A ReRAM cell is based on a metal-dielectric-metal structure. Transition metal oxides have proved to be good dielectrics. Voltage applied to a cell causes oxygen migration, thus altering resistance in the entire structure. So, controllable oxygen concentration in an oxide is a key parameter to determine the functional properties of memory cells.

Nevertheless, in spite of tangible progress in ReRAM development, flash memory still holds sway in the market. Its quite understandable. To make flash memory, 3D cell matrices can be used to dramatically increase cell density on a chip. Oxygen-deficient film coating methods for ReRAM, however, are inapplicable for functional coating of 3D structures.

Its exactly in an effort to circumvent the snag that the MIPT scientists have used the PEALD method enabling thin film application by means of chemical reactions on the surface of a sample. In PEALD, picking the right reacting substances is critical.

The problem has been successfully solved by using an oxygen-containing tantalum precursor and plasma-activated hydrogen as a reactant.
Publish in Twitter
Write to Facebook
Google Buzz
Write to LiveJournal
Show in MM
Share MK
COMMENT ON THIS STORY
Find Related Content

Locations: Moscow

Tags: MIPT (37) / tantalum oxide (0) / plasma enhanced atomic layer deposition (0) / non volatile memory (0) / ReRAM (0) /

Latest News: Central regions
17 Oct '17 | Finance, business | Technology & innovation
13 Oct '17 | Finance, business | Retail, FMCG
12 Oct '17 | Finance, business | Technology & innovation
10 Oct '17 | Finance, business | Technology & innovation
 

Feature stories

7 Sep '17
26 Jul '17
Scientists at Tomsk Polytechnic (TPU) in Siberia have...
20 Jun '17
In regions most of European Russians will hardly ever...
Search (News archive - 21174)
Advertising
Global_Entrepreneurship_Monitor
Advertising
Marchmont News

Latest News

19 Oct '17
Russian scientists in partnership with their Korean...
18 Oct '17
Scientists at the Novosibirsk-based Boreskov...
17 Oct '17
Rosatom, the national nuclear energy corporation, is...

Most read stories from last week

19 Oct '17
Russian scientists in partnership with their Korean...
17 Oct '17
Rosatom, the national nuclear energy corporation, is...
18 Oct '17
Scientists at the Novosibirsk-based Boreskov...