Structural optimization of MTJs with a composite free layer

Alexander Makarov; Viktor Sverdlov; Siegfried Selberherr

doi:10.1117/12.2025568

26 September 2013 Structural optimization of MTJs with a composite free layer

Alexander Makarov, Viktor Sverdlov, Siegfried Selberherr

Proceedings Volume 8813, Spintronics VI; 88132Q (2013) https://doi.org/10.1117/12.2025568
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States

Abstract

We investigate the switching statistics dependence on cell geometry by means of systematic micromagnetic simulations. We find that MTJs with a free layer composed of two ellipses with the axes a/2 and b inscribed into a rectangle a × b are characterized by the same switching speed and thermal stability as MTJs with a composite free layer (C-MTJs). As has been shown, the C-MTJs demonstrate a substantial decrease of the switching time and the switching current as compared to conventional MTJs with a monolithic free layer. Thus, while preserving all the advantages of the C-MTJs, the newly proposed structure does not require a narrow gap between the two parts of the composite layer and therefore can be easily fabricated.

Citation Download Citation

Alexander Makarov, Viktor Sverdlov, and Siegfried Selberherr "Structural optimization of MTJs with a composite free layer", Proc. SPIE 8813, Spintronics VI, 88132Q (26 September 2013); https://doi.org/10.1117/12.2025568

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