Christophe LEFEVRE

Researcher, Inorganic Materials Chemistry (DCMI)Christophe.Lefevre@ipcms.unistra.fr

Phone: +33(0)3 88 10 71 28Office: 2008

Research background

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	2008-2022: Associate scientist at CNRS 2022- : Research Director at CNRS
	08/2012-07/2013 : Visiting Professor at Ewha Womens University (Seoul / South Korea)
	2007-2008 : Post-doctoral internship at CEA (Valduc) : “Structural properties of actinides under high static pressure and high temperature”
	2004-2007 : Post-doctoral internship at the Max Planck Institut (Stuttgart) : “Structural and magnetic properties of $R_2T_2X$ (R = La-Lu, Y ; T = Fe, Co ; X = Br, I) compounds”

Academic background

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	2014 : Habilitation (Univ. Strasbourg). “Structure-property relationship of different oxides for spintronics”
	Jury : Jean-Marc Grenèche (President), IMMM (Le Mans) Philippe Taihades, CIRIMAT (Toulouse) Josep Foncuberta, ICAMB (Barcelone) Wilfrid Prellier, CRISMAT (Caen) Vincent Favre-Nicolin, CEA (Grenoble) Geneviève Pourroy, IPCMS (Strasbourg) Nathalie Viart, IPCMS (Strasbourg)
	2001-2004 : PhD (Univ. Henri Poincaré (Nancy)) “Structural, magnetic and electrical properties of HfFe₆Ge₆ -type RMn₆X_6-xX’_x (R = Gd-Lu, Y, Sc ; X = Ge, Sn ; X’ = Ga, In) compounds”
	Jury : Marc Drillon (Président), IPCMS (Strasbourg) Bernard Chevalier, ICMCB (Bordeaux) Olivier Isnard, Univ. Joseph. Fourrier (Grenoble) Fabio Canepa, Univ. Genova (Gênes) Kurt Hiebl, Univ. Wien (Vienne) Gerard Venturini, LCSM (Nancy) Bernard Malaman, LCSM (Nancy)

Current researches

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• Synthesis and characterisation of functional oxides
	The CoFe₂O₄ and FeV₂O₄ spinel compounds
	The multiferroic Ga_2-xFe_xO₃[/latex] compounds

• Partnership and Valorization
	Collaboration with Dassault-Aviation
	Joint Research Lab Moliere

Expertise & Software Development

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• X-rays Diffraction
	Le Bail & Rietveld Analyses
	Resonant diffraction

• Development
	FitREXS : simulation and refinement of DANES spectra

Other / Networks

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Other : CRPP (Competent Radiological Protection Person)

Networks :
Blender :

Publications

[1]

J. Werckmann, J. Cypriano, C.T. Lefèvre, K. Dembele, O. Ersen, D.A. Bazylinski, U. Lins, M. Farina, Localized iron accumulation precedes nucleation and growth of magnetite crystals in magnetotactic bacteria, Scientific Reports 7 (2017) 8291. https://doi.org/10.1038/s41598-017-08994-9.

[1]

A. Walter, C. Billotey, A. Garofalo, C. Ulhaq-Bouillet, C. Lefèvre, J. Taleb, S. Laurent, L. Vander Elst, R.N. Muller, L. Lartigue, F. Gazeau, D. Felder-Flesch, S. Bégin-Colin, Mastering the Shape and Composition of Dendronized Iron Oxide Nanoparticles To Tailor Magnetic Resonance Imaging and Hyperthermia, Chemistry of Materials 26 (2014) 5252–5264. https://doi.org/10.1021/cm5019025.

[1]

A. Thomasson, F. Ibrahim, C. Lefèvre, E. Autissier, F. Roulland, C. Mény, C. Leuvrey, S. Choi, W. Jo, O. Crégut, G. Versini, S. Barre, M. Alouani, N. Viart, Effects of iron concentration and cationic site disorder on the optical properties of magnetoelectric gallium ferrite thin films, RSC Advances 3 (2013) 3124–3130. https://doi.org/10.1039/c2ra22681b.

[1]

A. Thomasson, S. Cherifi, C. Lefèvre, F. Roulland, B. Gautier, D. Albertini, C. Mény, N. Viart, Room temperature multiferroicity in Ga0.6Fe1.4O3:Mg thin films, Journal of Applied Physics 113 (2013) 214101. https://doi.org/10.1063/1.4808349.

[1]

A. Thomasson, J. Kreisel, C. Lefèvre, F. Roulland, G. Versini, S. Barre, N. Viart, Raman scattering of magnetoelectric gallium ferrite thin films, Journal of Physics-Condensed Matter 25 (2013) 045401. https://doi.org/10.1088/0953-8984/25/4/045401.

[1]

E. Soszka, M. Jedrzejczyk, C. Lefèvre, D. Ihiawakrim, N. Keller, A.M. Ruppert, TiO2-supported Co catalysts for the hydrogenation of gamma-valerolactone to 2-methyltetrahydrofuran: influence of the support, Catalysis Science & Technology Early Access (2022). https://doi.org/10.1039/d2cy01044e.

[1]

K. Sartori, D. Ihiawakrim, C. Lefèvre, S. Reguer, C. Mocuta, S. Bégin-Colin, F. Choueikani, B.P. Pichon, A detailed investigation of the core@shell structure of exchanged coupled magnetic nanoparticles after performing solvent annealing, Materials Advances Early access (2022). https://doi.org/10.1039/d2ma00629d.

[1]

G.D. Salian, B.M. Koo, C. Lefèvre, T. Cottineau, C. Lebouin, A.T. Tesfaye, P. Knauth, V. Keller, T. Djenizian, Niobium Alloying of Self-Organized TiO2 Nanotubes as an Anode for Lithium-Ion Microbatteries, Advanced Materials Technologies 3 (2018) 1700274. https://doi.org/10.1002/admt.201700274.

[1]

F. Roulland, G. Roseau, A.P. Corredor, L. Wendling, G. Krieger, C. Lefèvre, M. Trassin, G. Pourroy, N. Viart, Promoting the magnetic exchanges in PLD deposited strained films of FeV2O4 thin films, Materials Chemistry and Physics 276 (2022) 125360. https://doi.org/10.1016/j.matchemphys.2021.125360.

[1]

F. Roulland, C. Lefèvre, A. Thomasson, N. Viart, Study of Ga(2-x)FexO3 solid solution: Optimisation of the ceramic processing, in: Journal of the European Ceramic Society, 2013: pp. 1029–1035. https://doi.org/10.1016/j.jeurceramsoc.2012.11.014.

[1]

Z. Raolison, Q. Clement, A.-L. Adenot-Engelvin, N. Mallejac, C. Lefèvre, G. Pourroy, F. Boust, N. Vukadinovic, Broadband Permeability Spectra of Flake-Shaped Ferromagnetic Particle Composites, in: IEEE Transactions on Magnetics, 2017: p. 2801704. https://doi.org/10.1109/TMAG.2017.2735943.

[1]

Z. Raolison, C. Lefèvre, J. Neige, A.-L. Adenot-Engelvin, J.M. Greneche, N. Vukadinovic, G. Pourroy, Structural and microwave properties of silica-coated NiFeMo flakes/polymer composites, Materials Research Express 2 (2015) 026101. https://doi.org/10.1088/2053-1591/2/2/026101.

[1]

Z. Raolison, C. Lefèvre, J. Neige, A.L. Adenot-Engelvin, G. Pourroy, N. Vukadinovic, Preparation and Microwave Properties of Silica Coated Ni-Fe-Mo Flakes Composites, in: IEEE Transactions on Magnetics, 2013: pp. 986–989. https://doi.org/10.1109/tmag.2012.2225025.

[1]

D. Preziosi, S. Homkar, C. Lefèvre, M. Salluzzo, N. Viart, Unusual anisotropic magnetic orbital moment obtained from x-ray magnetic circular dichroism in a multiferroic oxide system, Physical Review B 103 (2021) 184420. https://doi.org/10.1103/PhysRevB.103.184420.

[1]

B.P. Pichon, O. Gerber, C. Lefèvre, I. Florea, S. Fleutot, W. Baaziz, M. Pauly, M. Ohlmann, C. Ulhaq, O. Ersen, V. Pierron-Bohnes, P. Panissod, M. Drillon, S. Bégin-Colin, Microstructural and Magnetic Investigations of Wüstite-Spinel Core-Shell Cubic-Shaped Nanoparticles, Chemistry of Materials 23 (2011) 2886–2900. https://doi.org/10.1021/cm2003319.

[1]

A. Pena Corredor, M. Gamarde, L. El Khabchi, M.J.V. Bernardez, M. Lenertz, C. Leuvrey, L. Schlur, F. Roulland, N. Viart, C. Lefèvre, Room-temperature magnetism and controlled cation distribution in vanadium ferrite thin films, Materials Chemistry and Physics 314 (2024) 128856. https://doi.org/10.1016/j.matchemphys.2023.128856.

[1]

A. Pena Corredor, N. Viart, C. Lefèvre, inserexs: reflection choice software for resonant elastic X-ray scattering., Journal of Applied Crystallography 56 (2023) 854–859. https://doi.org/10.1107/S1600576723002212.

[1]

S.H. Oh, R.H. Shin, C. Lefèvre, A. Thomasson, F. Roulland, Y. Shin, D.-H. Kim, J.-Y. Kim, A. Demchenko, C. Leuvrey, C. Mény, W. Jo, N. Viart, Incorporation of cobalt ions into magnetoelectric gallium ferrite epitaxial films: tuning of conductivity and magnetization, RSC Advances 5 (2015) 34265–34271. https://doi.org/10.1039/c5ra03609g.

[1]

E. Miyako, B.P. Pichon, C. Menard-Moyon, I.A. Vacchi, C. Lefèvre, S. Bégin-Colin, A. Bianco, Design, synthesis, characterization and properties of magnetic nanoparticle-nanocarbon hybrids, Carbon 96 (2016) 49–56. https://doi.org/10.1016/j.carbon.2015.09.045.

[1]

B. Meunier, S. Homkar, F. Choueikani, M.G. Silly, C. Lefèvre, F. Roulland, C. Leuvrey, J. Robert, D. Preziosi, N. Viart, Nonmonotonous temperature fluctuations of the orbital moment and spin-orbit coupling in multiferroic gallium ferrite thin films, Physical Review B 106 (2022) 184410. https://doi.org/10.1103/PhysRevB.106.184410.

[1]

E. Martin, F. Roulland, S. Grenier, F. Appert, J. Juraszek, M. Trassin, C. Bouillet, E. Chikoidze, C. Arnold, B. Berini, Y. Dumont, S. Colis, S. Barre, G. Versini, D. Preziosi, C. Leuvrey, N. Blanc, N. Boudet, G. Pourroy, N. Viart, C. Lefèvre, Non-auxeticiauxetic transitions inducing modifications of the magnetic anisotropy in CoFe2O4 thin films, Journal of Alloys and Compounds 836 (2020) 155425. https://doi.org/10.1016/j.jallcom.2020.155425.

[1]

X. Liu, B.P. Pichon, C. Ulhaq, C. Lefèvre, J.-M. Greneche, D. Begin, S. Bégin-Colin, Systematic Study of Exchange Coupling in Core Shell Fe3-delta O4@CoO Nanoparticles, Chemistry of Materials 27 (2015) 4073–4081. https://doi.org/10.1021/acs.chemmater.5b01103.

[1]

C. Lefèvre, A. Demchenko, C. Bouillet, M. Luysberg, X. Devaux, F. Roulland, G. Versini, S. Barre, Y. Wakabayashi, N. Boudet, C. Leuvrey, M. Acosta, C. Mény, E. Martin, S. Grenier, V. Favre-Nicolin, N. Viart, Nondestructive Method for the Determination of the Electric Polarization Orientation in Thin Films: Illustration on Gallium Ferrite Thin Films, Small Methods 1 (2017) 1700234. https://doi.org/10.1002/smtd.201700234.

[1]

C. Lefèvre, A. Thomasson, F. Roulland, V. Favre-Nicolin, Y. Joly, Y. Wakabayashi, G. Versini, S. Barre, C. Leuvrey, A. Demchenko, N. Boudet, N. Viart, Determination of the cationic distribution in oxidic thin films by resonant X-ray diffraction: the magnetoelectric compound Ga$\sb 2$-$ıt x$Fe$\sb ıt x$O$\sb 3$, Journal of Applied Crystallography 49 (2016) 1308–1314. https://doi.org/10.1107/S1600576716010001.

[1]

C. Lefèvre, R.H. Shin, J.H. Lee, S.H. Oh, F. Roulland, A. Thomasson, E. Autissier, C. Mény, W. Jo, N. Viart, Reduced leakage currents and possible charge carriers tuning in Mg-doped Ga0.6Fe1.4O3 thin films, Applied Physics Letters 100 (2012) 262904 /p.1–4. https://doi.org/10.1063/1.4729872.

[1]

C. Lefèvre, F. Roulland, A. Thomasson, E. Autissier, C. Leuvrey, S. Barre, G. Versini, N. Viart, G. Pourroy, Stabilization of scandium rich spinel ferrite CoFe(2-x)Sc(x)O4 (x <= 1) in thin films, Journal of Solid State Chemistry 232 (2015) 118–122. https://doi.org/10.1016/j.jssc.2015.09.012.

[1]

C. Lefèvre, F. Roulland, A. Thomasson, C. Mény, F. Porcher, G. Andre, N. Viart, Magnetic and Polar Properties’ Optimization in the Magnetoelectric Ga2-xFexO3 Compounds, Journal of Physical Chemistry C 117 (2013) 14832–14839. https://doi.org/10.1021/jp403733b.

[1]

B. Kundys, F. Roulland, C. Lefèvre, C. Mény, A. Thomasson, N. Viart, Room temperature polarization in the ferrimagnetic Ga2-xFexO3 ceramics, Journal of the European Ceramic Society 35 (2015) 2277–2281. https://doi.org/10.1016/j.jeurceramsoc.2015.02.029.

[1]

S. Homkar, E. Martin, B. Meunier, A. Anadon-Barcelona, C. Bouillet, J. Gorchon, K. Dumesnil, C. Lefèvre, F. Roulland, O. Copie, D. Preziosi, S. Petit-Watelot, J.-C. Rojas-Sanchez, N. Viart, Spin Current Transport in Hybrid Pt/Multifunctional Magnetoelectric Ga0.6Fe1.4O3 Bilayers, ACS Applied Electronic Materials 3 (2021) 4433–4440. https://doi.org/10.1021/acsaelm.1c00586.

[1]

S. Homkar, D. Preziosi, X. Devaux, C. Bouillet, J. Nordlander, M. Trassin, F. Roulland, C. Lefèvre, G. Versini, S. Barre, C. Leuvrey, M. Lenertz, M. Fiebig, G. Pourroy, N. Viart, Ultrathin regime growth of atomically flat multiferroic gallium ferrite films with perpendicular magnetic anisotropy, Physical Review Materials 3 (2019) 124416. https://doi.org/10.1103/PhysRevMaterials.3.124416.

[1]

P. Guardia, S. Nitti, M.E. Materia, G. Pugliese, N. Yaacoub, J.-M. Greneche, C. Lefèvre, L. Manna, T. Pellegrino, Gold-iron oxide dimers for magnetic hyperthermia: the key role of chloride ions in the synthesis to boost the heating efficiency, Journal of Materials Chemistry B 5 (2017) 4587–4594. https://doi.org/10.1039/c7tb00968b.

[1]

P. Guardia, A. Riedinger, S. Nitti, G. Pugliese, S. Marras, A. Genovese, M.E. Materia, C. Lefèvre, L. Manna, T. Pellegrino, One pot synthesis of monodisperse water soluble iron oxide nanocrystals with high values of the specific absorption rate, Journal of Materials Chemistry B 2 (2014) 4426–4434. https://doi.org/10.1039/c4tb00061g.

[1]

J. Goetz, A. Nonat, A. Diallo, M. Sy, I. Sera, A. Lecointre, C. Lefèvre, C.F. Chan, K.-L. Wong, L.J. Charbonnière, Ultrabright Lanthanide Nanoparticles, ChemPlusChem 81 (2016) 526–534. https://doi.org/10.1002/cplu.201600007.

[1]

O. Gerber, B.P. Pichon, C. Ulhaq, J.-M. Greneche, C. Lefèvre, I. Florea, O. Ersen, D. Begin, S. Lemonnier, E. Barraud, S. Bégin-Colin, Low Oxidation State and Enhanced Magnetic Properties Induced by Raspberry Shaped Nanostructures of Iron Oxide, Journal of Physical Chemistry C 119 (2015) 24665–24673. https://doi.org/10.1021/acs.jpcc.5b08164.

[1]

P. Garcia-Munoz, F. Fresno, C. Lefèvre, D. Robert, N. Keller, Influence of the solid titanium source on the activity of La1_xTixFeO3 photo-CWPO catalysts under UV-A light, Catalysis Today 413–415 (2023) 113974. https://doi.org/10.1016/j.cattod.2022.12.005.

[1]

P. Garcia-Munoz, F. Fresno, C. Lefèvre, D. Robert, N. Keller, Ti- -Modified LaFeO3/beta-SiC Alveolar Foams as Immobilized Dual Catalysts with Combined Photo-Fenton and Photocatalytic Activity, ACS Applied Materials & Interfaces 12 (2020) 57025–57037. https://doi.org/10.1021/acsami.0c16647.

[1]

P. Garcia-Munoz, F. Fresno, C. Lefèvre, D. Robert, N. Keller, Synergy effect between photocatalysis and heterogeneous photo-Fenton catalysis on Ti-doped LaFeO3 perovskite for high efficiency light-assisted water treatment, Catalysis Science & Technology 10 (2020) 1299–1310. https://doi.org/10.1039/c9cy02269d.

[1]

P. Garcia-Munoz, F. Fresno, C. Lefèvre, D. Robert, N. Keller, Highly robust La1-xTixFeO3 dual catalyst with combined photocatalytic and photo-CWPO activity under visible light for 4-chlorophenol removal in Chock for water, Applied Catalysis B-Environmental 262 (2020) 118310. https://doi.org/10.1016/j.apcatb.2019.118310.

[1]

P. Garcia-Munoz, C. Lefèvre, D. Robert, N. Keller, Ti-substituted LaFeO3 perovskite as photoassisted CWPO catalyst for water treatment, Applied Catalysis B-Environmental 248 (2019) 120–128. https://doi.org/10.1016/j.apcatb.2019.02.030.

[1]

A. Demchenko, S. Homkar, C. Bouillet, C.T. Lefèvre, F. Roulland, D. Preziosi, G. Versini, C. Leuvrey, P. Boullay, X. Devaux, N. Viart, Unveiling unconventional ferroelectric switching in multiferroic Ga-0.6 Fe1.4O3 thin films through multiscale electron microscopy investigations, Acta Materialia 240 (2022) 118337. https://doi.org/10.1016/j.actamat.2022.118337.

[1]

A. Demchenko, Y. Chang, E. Chikoidze, B. Berini, C. Lefèvre, F. Roulland, C. Ulhaq-Bouillet, G. Versini, S. Barre, C. Leuvrey, V. Favre-Nicolin, N. Boudet, S. Zafeiratos, Y. Dumont, N. Viart, Tuning the conductivity type in a room temperature magnetic oxide: Ni-doped Ga0.6Fe1.4O3 thin films, RSC Advances 6 (2016) 28248–28256. https://doi.org/10.1039/c6ra01540a.

[1]

B. de Tymowski, Y. Liu, C. Mény, C. Lefèvre, D. Begin, P. Nguyen, C. Pham, D. Edouard, F. Luck, C. Pham-Huu, Co-Ru/SiC impregnated with ethanol as an effective catalyst for the Fischer-Tropsch synthesis, Applied Catalysis A-General 419 (2012) 31–40. https://doi.org/10.1016/j.apcata.2012.01.004.

[1]

M. Darcheville, A.-L. Adenot-Engelvin, C. Boscher, N. Vukadinovic, C. Lefèvre, A. Thiaville, C. Sanchez, Evidence of the Superparamagnetic State in the Zero-Field Microwave Susceptibility Spectra of Ferrimagnetic Nanoparticles, IEEE Magnetics Letters 11 (2020) 6105305. https://doi.org/10.1109/LMAG.2020.3026228.

[1]

G. Cotin, C. Kiefer, F. Perton, D. Ihiawakrim, C. Blanco-Andujar, S. Moldovan, C. Lefèvre, O. Ersen, B. Pichon, D. Mertz, S. Bégin-Colin, Unravelling the Thermal Decomposition Parameters for The Synthesis of Anisotropic Iron Oxide Nanoparticles, Nanomaterials 8 (2018) 881. https://doi.org/10.3390/nano8110881.

[1]

G. Cotin, F. Perton, C. Petit, S. Sall, C. Kiefer, V. Begin, B. Pichon, C. Lefèvre, D. Mertz, J.-M. Greneche, S. Bégin-Colin, Harnessing Composition of Iron Oxide Nanoparticle: Impact of Solvent-Mediated Ligand-Ligand Interaction and Competition between Oxidation and Growth Kinetics, Chemistry of Materials 32 (2020) 9245–9259. https://doi.org/10.1021/acs.chemmater.0c03041.

[1]

A.P. Corredor, L. Wendling, D. Preziosi, L. Schlur, C. Leuvrey, D. Thiaudiere, E. Elklaim, N. Blanc, S. Grenier, F. Roulland, N. Viart, C. Lefèvre, Oxygen crystallographic positions in thin films by non-destructive resonant elastic X-ray scattering, Journal of Applied Crystallography 55 (2022) 526–532. https://doi.org/10.1107/S1600576722003673.

[1]

S. Choi, C. Lefèvre, F. Roulland, C. Mény, N. Viart, B. To, D.E. Shafer, R. Shin, J. Lee, W. Jo, Optical transitions in magnetoelectric Ga0.6Fe1.4O3 from 0.73 to 6.45 eV, Journal of Vacuum Science & Technology B 30 (2012) 041204 /p.1–5. https://doi.org/10.1116/1.4721649.

[1]

M.T. Camci, M. Pauly, C. Lefèvre, C. Bouillet, M. Maaloum, G. Decher, D. Martel, Polarization-dependent optical band gap energy of aligned semiconducting titanium oxide nanowire deposits, Nanoscale 13 (2021) 8958–8965. https://doi.org/10.1039/d1nr01236c.