PerspectiveApplied Physics

Toward a Universal Memory

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Science  22 Apr 2005:
Vol. 308, Issue 5721, pp. 508-510
DOI: 10.1126/science.1110549

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Today's electronic gadgets, such as digital cameras and mp3 players, often contain three different types of memory, because none of these memory types-static random access memory, dynamic random access memory, and Flash-can fulfill all memory requirements of these devices. In his Perspective, Åkerman discusses magnetoresistive random access memory (MRAM), a promising candidate for a "universal memory" that combines all the strengths and none of the weaknesses of the existing memory types. Several companies have succeeded in creating multi-megabyte MRAM prototypes, suggesting that large-scale introduction of MRAM devices to the market is not far off.