High-density magnetoresistive random access memory operating at ultralow voltage at room temperature

Jia Mian Hu, Zheng Li, Long Qing Chen, Ce Wen Nan

Research output: Contribution to journalArticlepeer-review

363 Scopus citations


The main bottlenecks limiting the practical applications of current magnetoresistive random access memory (MRAM) technology are its low storage density and high writing energy consumption. Although a number of proposals have been reported for voltage-controlled memory device in recent years, none of them simultaneously satisfy the important device attributes: high storage capacity, low power consumption and room temperature operation. Here we present, using phase-field simulations, a simple and new pathway towards high-performance MRAMs that display significant improvements over existing MRAM technologies or proposed concepts. The proposed nanoscale MRAM device simultaneously exhibits ultrahigh storage capacity of up to 88 Gbg inch -2, ultralow power dissipation as low as 0.16fJ per bit and room temperature high-speed operation below 10ns.

Original languageEnglish (US)
Article number553
JournalNature communications
Issue number1
StatePublished - 2011

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)


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