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Accueil du site > Divers > Equipe 1-NMF2 > NMF2

NMF2

30 mai 2016

New materials : from fundamentals to functionalities (NMF2)

Group Members (2015)

- David Berthebaud (CR2)

- Vu Hung Dao (MCF)

- Ramzy Daou (CR2)

- Raymond Frésard (PR1)

- Franck Gascoin (MCF- HDR)

- Sylvie Hébert (DR2)

- Oleg Lebedev (DR2)

- Antoine Maignan (DRCE)

- Valérie Pralong (DR2)

- Bernard Raveau (Emeritus)

- Jean-Michel Rueff (MCF- HDR)

PhD students

- Evan Adamczyk (2016-2019)

- Stefan Maier (2015- 2018)

- Mélanie Freire (2014 – 2017)

- Robin Lefèvre (2014 – 2017)

- Flora Molinari (2013 – 2016)

Post-doctoral fellows

- Elisabeth Rausch (2016-2018)

- Emmanuel Anger (2016-2017)

Former members

- Barbara Leroux (2012–2015)

- Marion Galmiche (2012–2015)

- Nathalie Hugo (2014–2015)

- Asish K. Kundu, from IITDMJ, Jabalpur (2014–2015)

Activities

We are interested in the search and investigation of oxides, sulfides, selenides, oxysulfides or oxyselenides, and hybrid materials. Some intermetallics are also investigated, mostly for thermoelectrics. The interplay between spin, charge and lattice in these materials can lead to interesting electronic or magnetic properties with potential applications in the field of energy (thermoelectricity, fuel cells, batteries, anionic or cationic conduction…) or magnetism (multiferroicity). The properties can moreover be strongly modified by shifting from ionic bonding in oxides to a much more covalent behaviour in sulfides and selenides.
The aim of our group is to synthesize new materials and investigate their different properties (magnetism, electronic and thermal transport properties, dielectric constant, polarization) to better understand the relationships between the crystallographic structure and these properties. Theoretical approaches including microscopic calculations of transport quantities, intertwined ground states, and dynamics are developed and applied to models relevant to these materials.

Topics

Thermoelectric materials

Anionic and cationic conductors

Experimental techniques

- Single crystal flux growth

- Standard solid-state reaction

- Soft chemistry synthesis (precipitation, hydrothermal, solvothermal, ionic exchange, electrochemistry, sol gel, micro-wave)

- Spark Plasma Sintering

- X-ray diffraction

- Transmission Electron Microscopy

- Resistivity, thermal conductivity and Seebeck coefficient measured from 2 to 325K, up to 9T, in PPMS systems.

- Squid magnetometers (up to 5T) for magnetization investigations.

- ZEM3 systems for resistivity and Seebeck coefficient measured from 250 to 1000K

- Netzch laser flash experiments for thermal diffusivity.

- Impedance spectroscopy measurement

- Galvanostatic and potentiostatic measurement

- Cyclic voltammetry
Intermittent technique (PITT and GITT)

- Li/Na ion batteries cells

Collaborations

- LPS (Orsay)

- GREMAN (Tours)

- ICMCB (Bordeaux)

- CEMCA (Brest)

- IPCMS (Strasbourg)

- Nottingham University (UK)

- Max Planck Institute for Chemical Physics of Solids (Dresden, Germany)

- Univ Antwerp, EMAT, (Antwerp, Belgium)

- National Institute RD electrochemistry and Condensed Matter (Timisoara)

- Univ Politehnica Timisoara, Fac Ind Chem Environm Engn. (Timisoara, Romania)

- UR Phys Chim Mat Solides Fac Sci Tunis (Tunisia)

- Indian Institute of Technology (IIT), (Madras, India)

- Terasaki group, Department of Physics Nagoya (Japan)

- National Institute for Materials Science (Tsukuba, Japan),

- National Institute of Advanced Industrial Science and Technology, AIST (Tsukuba, Japan)

- Augsburg University (Germany)
Max Planck Institut für Festkörperforschung (Stuttgart, Germany)

- Jagellonian University (Krakow, Poland)

- Karlsruher Institut für Technologie (Karlsruhe, Germany)

- Bonn University (Germany)

- KAUST (Saudi Arabia)

Recent publications

• Tuned thermoelectric properties of TiS1.5Se0.5 through copper intercalation
Raghavendra Nunna, Franck Gascoin, Emmanuel Guilmeau
Journal of Alloys and Compounds, Volume 634, 32 (2015)

• Measuring thermoelectric transport properties of materials
Kasper A. Borup, Johannes de Boor, Heng Wang, Fivos Drymiotis, Franck Gascoin, Xun Shi, Lidong Chen, Mikhail I. Fedorov, Eckhard Müller, Bo B. Iversen and G. Jeffrey Snyder
Energy Environmental Science, 2015,8, 423-435 DOI : 10.1039/C4EE01320D, Review Article

• Large anisotropic thermal conductivity of intrinsically two-dimensional metallic oxide PdCoO2
R. Daou, R. Frésard, S. Hébert, A. Maignan
Phys. Rev. B91, 041113 (2015)

• Thermopower in the quadruple perovskite ruthenates
S. Hébert, R. Daou, A. Maignan
Phys.Rev. B91, 045106 (2015)

• Sol-gel synthesis of Fe-Co nanoparticles and magnetization study
Pranjal Nautiyal, Md. Motin Seikh, Oleg I. Lebedev, and Asish K. Kundu. J
Magnetism Mgn. Mater. 377, 402 (2015)

• The new cerium-rich intermetallic phase Ce13Ru2Sn5 : Crystal structure and physical properties
V. Gribanova, N. Sorokina, E. Murashova, A. Slabon, R. Daou, A. Maignan, O. Lebedev, and A. Gribanov..
J. Alloys and Comp. 622, 745 (2015)

• Textured Al-doped ZnO ceramics with isotropic grains
P. Diaz-Chao, F. Giovannelli, O. Lebedev, D. Chateigner, L. Lutterotti, F. Delorme, and E. Guilmeau
J. Eur. Ceramic Soc. 34, 4247 (2014)

• Nanoscale Ordering in Oxygen Deficiant Quintuple Perovskite Sm2- ?Ba3+ ?Fe5O15- ? : Implication for Magnetism and Oxygen Stoichiometry
Nadezhda E. Volkova, Oleg I. Lebedev, Ludmila Ya. Gavrilova, Stuart Turner, Nicolas Gauquelin, Md Motin Seikh, Vincent Caignaert, Vladimir A. Cherepanov, Bernard Raveau, and Gustaaf Van Tendeloo
Chem. Mater. 26, 6303 (2014)

• Impact of Crystal Chemistry upon Spin Orientation Transitions in Magnetic Perovskites
Bernard Raveau and Md. Motin Seikh..
Zeit. Anorgan. Allgemeine Chem. 640, 2649 (2014)

• ZrSe3-Type Variant of TiS3 : Structure and Thermoelectric Properties
Emmanuel Guilmeau, David Berthebaud, Patrick R. N. Misse, Sylvie Hebert, Oleg I.Lebedev, Daniel Chateigner, Christine Martin, and Antoine Maignan
Chem. Mater. 26, 5585 (2014)

• Exact ground state of strongly correlated electron systems from symmetry-entangled wave-functions
Alexandre Leprévost, Olivier Juillet, and Raymond Frésard
Ann. Phys. (Berlin), 526, 430 (2014)

• Structural, magnetic and transport properties of 2D structured perovskite oxychalcogenides
David Berthebaud, Oleg I. Lebedev, Denis Pelloquin, and Antoine Maignan
Solid Stat. Sci. 36, 94 (2014)

• Amorphous sodium vanadate Na1.5+yVO3, a promising matrix for reversible sodium intercalation
Venkatesh, G. ; Pralong, V. ; Lebedev, O. I. ; Caignaert, V. ; Bazin, P. ; Raveau, B
Electrochemistry Communications 40, 100 (2014)

• Transition metal hydrogenophosphates : a potential source of new protonic and lithium conductors
V. Pralong, V. Caignaert, B. Raveau
J. Mat. Chem., review, 21, 33, 12188 (2011)

• Exotic spin, charge and pairing correlations of the two-dimensional doped Hubbard model : A symmetry-entangled mean-field approach
O. Juillet and R. Frésard
Phys. Rev. B 87, 115136 (2013)