MRAM

Overview

The Magnetic Random Access Memories (MRAM) group develops advanced concepts in this emerging technology. The goal is to realize cells with improved thermal stability, lower power consumption and/or faster switching. Our research covers material stack deposition, nano-fabrication and electrical test evaluation, for applications as standalone memory and non-volatile logic and more recently in neuromorphic computing architectures.

Research directions

Perpendicular Anisotropy Materials

High energy barriers for spin transfer torque (STT) MRAM cells can be achieved with perpendicular anisotropy magnetic tunnel junctions. Solutions for high density MRAM cells to diameters below 20nm require continuous improvements in perpendicular surface anisotropy, while maintaining high TMR properties.

Perpendicular STT MRAM

Evaluation of MRAM concepts requires simulation of expected reversal mechanisms and electrical characterization of individual cells. We aim at understanding dynamics of magnetization reversal and the expected impact of stack modifications to explore application specific optimizations.

Nanofabrication Challenges

Innovation on dense MRAM using pre-patterned substrates, CMOS integration of multifunctional cells and sub-10nm lateral sizes. Tunnel junction nanofabrication in our platform is essential to evaluate MRAM concepts and performance.

Perpendicular Shape Anisotropy

A solution for sub-10nm cell sizes uses high aspect ratios to generate perpendicular shape anisotropy providing scalable retention at the smallest cell sizes. Spin transfer torque switching is possible in these cells, where the reversal dynamics is now under study.

The team

Former members

Post-docs

  • Andrey TIMOPHEEV (2014-2017)
  • Van Dai NGUYEN (2016-2018)
  • J. Ranier Roiz (2015-2016)
  • Nikita Strelkov (2016-2019)

PhD

  • Luc TILLIE (2015-2018)
  • Nicolas PERRISSIN (2015-2018)
  • Jyotirmoy CHATTERGEE (2014-2017)
  • Hieu Tan NGUYEN (2013-2016)
  • Antoine Chavent (2013-2015)

Process Engineers

  • Jude GUELFFUCCI (2015-2017)
  • Nathalie LAMARD (2016-2017)
  • Guillaume LAVAITTE (2015-2016)

Projects

  • Samsung SGMI (2014-2017)
  • ANR Excalyb (2014-2017)
  • Heumem (2015-2018)
  • EU-FET Spice (2016-2019)
  • EU Great (2016-2019)
  • ERC Magical (2015-2020)

Partners

  • CEA LETI, Grenoble, France
  • Institut NEEL, Grenoble, France
  • Crocus Technology, Grenoble, France
  • Samsung, San Jose, USA
  • Singulus AG, Kahl am Main, Germany
  • Aarhus University, Aarhus, Denmark
  • Radboud Universiteit, Neijmegen, Netherlands

Recent news

  • PhD defense – Memristive magnetic memory for spintronic synapses (December 07th, 2020)PhD defense - Memristive magnetic memory for spintronic synapses
    On Thursday, December 17, 2020 at 13H30, Marco Mansueto will defend his PhD entitled: Memristive magnetic memory for spintronic synapses Video conference: https://grenoble-inp.zoom.us/j/96102161721 Abstract : In the context ...
  • Unveiling the heart of magnetic memory cells thanks to electron holography (November 10th, 2020)Unveiling the heart of magnetic memory cells thanks to electron holography
    Magnetic spintronic memory called STT-MRAM have recently entered in volume production at major microelectronic foundries. The research in this area is now focused on preparing the future memory generations with higher capacity, higher speed, lower ...
  • MAGALIGN – ERC Proof of Concept grant (October 28th, 2020)MAGALIGN - ERC Proof of Concept grant
    ERC Proof of Concept grant MAGALIGN is awarded in the framework of ERC Project MAGICAL The launching of a new generation of spintronic memory (STT-MRAM) in volume production in 2019 by all major microelectronics companies marks ...
  • Masters thesis projects for Spring 2021 (September 15th, 2020)Masters thesis projects for Spring 2021
    You find here the list of proposals for Master-2 internships to take place at Spintec during Spring 2021. In most cases, these internships are intended to be suitable for a longer-term PhD work. Interested Master-1 ...
  • Optical access of magnetic tunnel junctions for future hybrid spintronic–photonic memory circuits (August 24th, 2020)Optical access of magnetic tunnel junctions for future hybrid spintronic–photonic memory circuits
    We demonstrate in this study a fabrication process that enables the realization of a top transparent conductive electrode of magnetic tunnel junctions (MTJs), building blocks of magnetic random access memories (MRAMs). This work opens up ...

Publications

[ All | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 ]


Copyright © 2015 - Spintec.fr - Réalisation par OXIWIZ

Scroll to Top