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Nanolamellar & 2D Materials

The Mn+1AXn phases, or “MAX” phases, are nano-laminates, where M is an early transition metal, A belongs to groups 13-16, and X is either C or N. They were discovered some decades ago. MAX phases crystallize in a hexagonal structure and uniquely combine both metallic and ceramic characteristics. In the research line Nanolamellar & 2D Materials, we grow single crystals of MAX phases using high temperature solution growth [1] and determine their physical properties, focusing on the anisotropies expected from their nano-lamellar structure. To cite but a few examples, in collaboration with our various partners, we have measured magneto-transport [2], band structure [3] or phonon dispersion [4] anisotropies of MAX phase single crystals. We do not limit ourselves to nanolamellar carbides, but we have also started to develop activities on nanolamellar borides [5] and rare-earth nanolaminates [6].

We also use MAX and MAB phase crystals to study their exfoliation kinetics [7] and to produce two-dimensional (2D) materials as MXenes using wet chemistry or molten salt assisted synthesis. The library of the synthesized materials includes Ti3C2Tz, Ti2CTz, Ti2C0.5N0.5Tz, Ti3CNTz, V2CTz, Nb2CTz, just to name a few. We explore the physical characteristics of synthesized 2D materials, in particular transport properties, and their integration into various applications belonging to the fields of sensing [8], photovoltaics [9], and energy [10].

We conduct our research through a rich collaborative network, involving Institut Néel (France), ESRF (France), Université Catholique de Louvain (Belgium), Drexel University (USA), Nagoya University (Japan), Institut Pprime (France) and The Institute of Structure of Matter (Italy).

Non permanent staff

selected publications

[1] L. Shi et al. Acta Materialia 83, 304 (2015)
Synthesis of Single Crystals of V2AlC Phase by High-Temperature Solution Growth and Slow Cooling Technique

[2] T. Ouisse et al. Physical Review B 92, 045133 (2015)
Magnetotransport Properties of Nearly-Free Electrons in 2D Hexagonal Metals and Application to the Mn+1AXn Phases

[3] D. Pinek et al. Physical Review B 100, 075144 (2019)
Unified Description of the Electronic Structure of M2AC Nanolamellar Carbides

[4] A. Champagne et al. Materials Research Letters 6, 378 (2018)
Phonon Dispersion Curves in Cr2AlC Single-Crystals

[5] L. Verger et al. Journal of Applied Physics 124, 205108 (2018)
Anisotropic Thermal Expansions of Select Layered Ternary Transition Metal Borides: MoAlB, Cr2AlB2, Mn2AlB2, and Fe2AlB2

[6] Q. Tao et al. Physical Review Materials 2, 114401 (2018)
Rare-Earth (RE) Nanolaminates Mo4RE4Al7C4 Featturing Ferromagnetism and Mixed-Valence States

[7] Y. Kim et al. RSC Advances 10, 25266-25274 (2020)
Elementary Processes Governing V2AlC Chemical Etching in HF

[8] H. Pazniak et al. Advanced Materials 33, 2104878 (2021)
2D Molybdenum Carbide MXenes for Enhanced Selective Detection of Humidity in Air

[9] A. Agresti et al. Nature Materials 18, 1228-1234 (2019)
Titanium-Carbide MXenes for Work Function and Interface Engineering in Perovskite Solar Cells

[10] S.A. Sergiienko et al. International Journal of Hydrogen Energy 46, 11636-11651 (2021)
MXene-Containing Composite Electrodes for Hydrogen Evolution: Material Design Aspects and Approaches for Electrode Fabrication

Projects

MORE-MAX (2018-2021, coordinator)
Type: International Strategic Partnership program, IDEX Univ. Grenoble Alpes & ESRF
Title: Probing the magnetism of each chemical element in rare earth-based MAX phases
Partnership: European Synchrotron Radiation Facility (ESRF, Grenoble), Université de Linköping (Suède)

MORE-MXènes (2018-2021, coordinator)
Type: FLAG-ERA call, European programm from Flagship Graphene
Title: Magnetically ordered rare earth 2D MXenes
Partnership: Linköping University (Sweden), Institut Néel (Grenoble), Université Catholique de Louvain (Belgium)

Chaire of Excellence Program of M. W. Barsoum (2017-2019, coordinator)
Type: Nanosciences Fondation call, Univ. Grenoble Alpes Fondation
Title: Production of MXenes on large surface area from MAX phase single crystals and fabrication of 2D electron devices
Partnership: Drexel University (USA), Institut Néel (Grenoble), CEA-PHELIQS (Grenoble)

National & international collaborations

  • Institut Néel, Grenoble
  • European Synchroton Radiation Facility, Grenoble
  • Institut Laue-Langevin, Grenoble
  • Institut Pprime, Poitiers
 
  • Drexel University, USA
  • Linköping University, Sweden
  • Université Catholique de Louvain, Belgium
  • Nagoya University, Japan

Date of update April 5, 2022

  • Tutelle CNRS
  • Tutelle Grenoble INP
Université Grenoble Alpes