Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8153030 | Journal of Magnetism and Magnetic Materials | 2018 | 5 Pages |
Abstract
Stress-mediated magnetoelectric heterostructures represent a very promising approach for the realization of ultra-low energy Random Access Memories. The magnetoelectric writing of information has been extensively studied in the past, but it was demonstrated only recently that the magnetoelectric effect can also provide means for reading the stored information. We hereby theoretically study the dynamic behaviour of a magnetoelectric random access memory cell (MELRAM) typically composed of a magnetostrictive multilayer NÃ(TbCo2/FeCo) that is elastically coupled with a ã0 1 1ã PMN-PT ferroelectric crystal and placed in a Wheatstone bridge-like configuration. The numerical resolution of the LLG and electrodynamics equation system demonstrates high speed write and read operations with an associated extra-low energy consumption. In this model, the reading energy for a 50â¯nm cell size is estimated to be less than 5â¯aJ/bit.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Vladimir Preobrazhensky, Alexey Klimov, Nicolas Tiercelin, Yannick Dusch, Stefano Giordano, Anton Churbanov, Theo Mathurin, Philippe Pernod, Alexander Sigov,