EXCELLENT PHASE · change data storage materials
6РП — Действия „Мария Кюри“
- Период
- 2007-01-01 → 2008-12-31
- Финансиране от ЕС
- 152 809 €
- Участници
- 1
- Схема
- EIF
Линиите свързват координатора с партньорите.
Накратко на български
Материалите за памет с фазова промяна се изследват чрез компютърни симулации на атомно ниво, за да се разбере как се записват данните. Това помага за създаването на устройства с по-голям капацитет от сегашните флаш памети.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Final Activity Report Summary - EXCELLENT PHASE (Excellent phase-change data storage materials)
Soon the capacity of a flash memory drive will reach its limits but still people will need ever higher capacity data storage devices. Wouldn't it be great to have all your 100 favorite movies, songs stored on your cell phone in high quality? Also, in the future bio-informatics could help cure diseases and for that people will need their DNA information stored digitally which could consume Terabytes of data. These are just two examples where data storage is crucial and flash memory won't be the solution. However, emerging phase change (PC) memory devices can provide an even higher capacity than flash memory devices nowadays available. These PC devices store 0 and 1 bits by changing locally the atomic structure, between ordered or disordered, and hence the electronic conductivity between metallic and insulating. In order to be able to rapidly optimize this new (PC) technology an atomic level understanding of the involved phase change mechanisms is essential. In our research we produced the first ever atomic level computer simulation of the phase change process used in PC devices to store bits of information on the same (nanosecond) time scale as it happens in experiments. Such a simulation can give us such detailed information on the atomic structure which is not accessible in with experimental techniques. We identified a high density of crystal seeds in the disordered structure of PC materials. The presence of such seeds makes the phase transformation faster and which affects the data transfer in PC devices. Since our simulations are general, they can be applied to any material composition. So the design of new and superior phase change materials can be aided by the type of computer simulations that we demonstrated for the most commonly used phase change material, GST-225.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Today, 4.7 GB DVD discs in use are made of phase-change chalcogenides. In five years, the 1000 GB MODS discs based on the same materials are expected to be commercialized and non-volatile phase-change memories may revolutionize the next generation of laptops and digital cameras.However, as written in Nature last year: A paradoxical situation exists when a device such as an optical disc is functional and commercially available but the structural changes behind the utilized transition are unknown. There is a big European effort in the field of phase-change optical memory, with the main competition being in Japan.Finding out the mechanisms involved should greatly help in increasing European competitiveness in this; for a future technology, which is electrical RAM also using phase-change chalcogenides (USA competitors), the same applies.The aim of the proposed research is to reveal the atomic-scale mechanisms underlying optically and electrically driven phase transformations by using molecular-dynamics computer simulation that will make it possible to monitor atomic motions induced by light or electrical current in phase-change chalcogenides. This knowledge can then be used to develop faster, more stable, and higher capacity phase-change data storage materials.The guarantee for the success of the project is the expertise of the fellow and the host (Prof. S.R. Elliotts group in Cambridge) in the proposed field due to their previous extensive molecular dynamics simulation studies of photo-induced phenomena in chalcogenide glasses.During the fellowship in Cambridge, the fellow will obtain the best possible advanced-research-training in the proposed multidisciplinary area, which is perfectly suited to his individual needs and will guarantee reaching professional maturity as an independent researcher.
Оригинален текст от CORDIS (на английски).
Участници
- University of Cambridge · CambridgeКоординаторОбединеното кралство
Връзки
Данни: CORDIS, © Европейски съюз