Dominique Givord

Pós-doutorado

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Orientou

Produções bibliográficas

• ITO, MASAAKI ; YANO, MASAO ; DEMPSEY, NORA M. ; Givord, Dominique . Calculations of the magnetic properties of R2M14B intermetallic compounds (R=rare earth, M=Fe, Co). Journal of Magnetism and Magnetic Materials , v. 400, p. 379-383, 2016.

• ROY, DAMIEN LE ; SHAW, GORKY ; HAETTEL, RICHARD ; HASSELBACH, KLAUS ; DUMAS-BOUCHIAT, FRÉDÉRIC ; Givord, Dominique ; DEMPSEY, NORA M. . Fabrication and characterization of polymer membranes with integrated arrays of high performance micro-magnets. Materials Today Communications , v. 6, p. 50-55, 2016.

• ITO, M. ; YANO, M. ; SAKUMA, N. ; KISHIMOTO, H. ; MANABE, A. ; SHOJI, T. ; KATO, A. ; Dempsey, N. M. ; Givord, D. ; ZIMANYI, G. T. . Coercivity enhancement in Ce-Fe-B based magnets by core-shell grain structuring. AIP Advances , v. 6, p. 056029, 2016.

• COLIN, C. V. ; ITO, M. ; YANO, M. ; Dempsey, N. M. ; SUARD, E. ; Givord, D. . Solid-solution stability and preferential site-occupancy in (R-R-)2Fe14B compounds. Applied Physics Letters , v. 108, p. 242415, 2016.

• MCGUINESS, P. ; AKDOGAN, O. ; ASALI, A. ; BANCE, S. ; BITTNER, F. ; COEY, J. M. D. ; Dempsey, N. M. ; FIDLER, J. ; Givord, D. ; Gutfleisch, O. ; KATTER, M. ; LE ROY, D. ; SANVITO, S. ; SCHREFL, T. ; Schultz, L. ; SCHWÖBL, C. ; SODER'NIK, M. ; ?TURM, S. ; TOZMAN, P. ; ÜSTÜNER, K. ; VENKATESAN, M. ; WOODCOCK, T. G. ; 'AGAR, K. ; KOBE, S. . Replacement and Original Magnet Engineering Options (ROMEOs): A European Seventh Framework Project to Develop Advanced Permanent Magnets Without, or with Reduced Use of, Critical Raw Materials. JOM , v. 67, p. 1306-1317, 2015.

• DE TORO, JOSÉ A. ; MARQUES, DANIEL P. ; MUÑIZ, PABLO ; Skumryev, Vassil ; SORT, JORDI ; Givord, Dominique ; Nogués, Josep . High Temperature Magnetic Stabilization of Cobalt Nanoparticles by an Antiferromagnetic Proximity Effect. Physical Review Letters (Print) , v. 115, p. 057201, 2015.

• BARTHEM, VITORIA M.T.S. ; COLIN, CLAIRE V. ; HAETTEL, RICHARD ; DUFEU, DIDIER ; Givord, Dominique . Easy moment direction and antiferromagnetic domain wall motion in Mn2Au. Journal of Magnetism and Magnetic Materials , v. 400, p. MAGMAD1501252, 2015.

• AKDOGAN, O. ; SEPEHRI-AMIN, H. ; Dempsey, N. M. ; OHKUBO, T. ; HONO, K. ; Gutfleisch, O. ; SCHREFL, T. ; Givord, D. . Preparation, Characterization, and Modeling of Ultrahigh Coercivity Sm-Co Thin Films. Advanced Electronic Materials , v. 1, p. 1500009, 2015.

• HERRERA DIEZ, L. ; BERNAND-MANTEL, A. ; VILA, L. ; WARIN, P. ; Marty, A. ; ONO, S. ; Givord, D. ; Ranno, L. . Electric-field assisted depinning and nucleation of magnetic domain walls in FePt/Al2O3/liquid gate structures. Applied Physics Letters , v. 104, p. 082413, 2014.

• BANCE, S. ; OEZELT, H. ; SCHREFL, T. ; CIUTA, G. ; Dempsey, N. M. ; Givord, D. ; WINKLHOFER, M. ; HRKAC, G. ; ZIMANYI, G. ; Gutfleisch, O. ; WOODCOCK, T. G. ; SHOJI, T. ; YANO, M. ; KATO, A. ; MANABE, A. . Influence of defect thickness on the angular dependence of coercivity in rare-earth permanent magnets. Applied Physics Letters , v. 104, p. 182408, 2014.

• LE ROY, DAMIEN ; AKDOGAN, OZAN ; CIUTA, GEORGETA ; DEMPSEY, NORA ; Givord, Dominique . Micrometer-size Nd-Fe-B dots as model systems for the study of intergranular phase engineering in Nd-Fe-B permanent magnets. Journal of Applied Physics , v. 115, p. 17A738, 2014.

• AKDOGAN, O. ; DOBRYNIN, A. ; LE ROY, D. ; Dempsey, N. M. ; Givord, D. . Superferrimagnetism in hard Nd-Fe-B thick films, an original concept for coercivity enhancement. Journal of Applied Physics , v. 115, p. 17A764, 2014.

• GUNDUZ AKDOGAN, N. ; Dempsey, N. M. ; Givord, D. ; MANABE, A. ; SHOJI, T. ; YANO, M. ; KATO, A. . Influence of Nd and Cu content on the microstructural and magnetic properties of NdFeB thick films. Journal of Applied Physics , v. 115, p. 17A722, 2014.

• HERRERA DIEZ, L. ; BERNAND-MANTEL, A. ; MICHELE, O. ; VILA, L. ; WARIN, P. ; Marty, A. ; Ranno, L. ; Givord, D. . Electric-field effect on coercivity distributions in FePt magneto-electric devices. Applied Physics Letters , v. 102, p. 012409, 2013.

• BERNAND-MANTEL, A. ; HERRERA-DIEZ, L. ; Ranno, L. ; PIZZINI, S. ; VOGEL, J. ; Givord, D. ; AUFFRET, S. ; BOULLE, O. ; MIRON, I. M. ; GAUDIN, G. . Electric-field control of domain wall nucleation and pinning in a metallic ferromagnet. Applied Physics Letters , v. 102, p. 122406, 2013.

• Dempsey, N.M. ; Woodcock, T.G. ; SEPEHRI-AMIN, H. ; ZHANG, Y. ; KENNEDY, H. ; Givord, D. ; HONO, K. ; Gutfleisch, O. . High-coercivity Nd-Fe-B thick films without heavy rare earth additions. Acta Materialia (Oxford) , v. 61, p. 4920-4927, 2013.

• ZABLOTSKII, VITALII ; DEJNEKA, ALEXANDR ; KUBINOVÁ, ?ÁRKA ; LE-ROY, DAMIEN ; DUMAS-BOUCHIAT, FRÉDÉRIC ; Givord, Dominique ; DEMPSEY, NORA M. ; SYKOVÁ, EVA . Life on Magnets: Stem Cell Networking on Micro-Magnet Arrays. Plos One , v. 8, p. e70416, 2013.

• BRUNET, THIBAUT ; BOUCLET, ADRIEN ; AHMADI, PADRA ; MITROSSILIS, DÉMOSTHÈNE ; DRIQUEZ, BENJAMIN ; BRUNET, ANNE-CHRISTINE ; HENRY, LAURENT ; SERMAN, FANNY ; BÉALLE, GAËLLE ; MÉNAGER, CHRISTINE ; DUMAS-BOUCHIAT, FRÉDÉRIC ; Givord, Dominique ; YANICOSTAS, CONSTANTIN ; LE-ROY, DAMIEN ; DEMPSEY, NORA M. ; PLESSIS, ANNE ; FARGE, EMMANUEL . Evolutionary conservation of early mesoderm specification by mechanotransduction in Bilateria. Nature Communications , v. 4, p. 1/3821-14, 2013.

• BARTHEM, V.M.T.S. ; COLIN, C.V. ; MAYAFFRE, H. ; JULIEN, M.-H. ; Givord, D. . Revealing the properties of Mn2Au for antiferromagnetic spintronics. Nature Communications , v. 4, p. 1/3892-7, 2013.

• PONOMAREVA, SVETLANA ; ZANINI, LUIZ FERNANDO ; DUMAS-BOUCHIAT, FRÉDÉRIC ; DEMPSEY, NORA M. ; Givord, Dominique ; MARCHI, FLORENCE . Measuring the Force Gradient Acting on a Magnetic Microsphere above a Micro-Magnet Array. Advanced Materials Research (Online) , v. 872, p. 167-173, 2013.

• Dobrynin, A. N. ; Givord, D. . Exchange bias in a Co/CoO/Co trilayer with two different ferromagnetic-antiferromagnetic interfaces. Physical Review. B, Condensed Matter and Materials Physics , v. 85, p. 014413, 2012.

• Laureti, Sara ; Suck, Sarah ; Haas, Helge ; Prestat, Eric ; Bourgeois, Olivier ; Givord, Dominique . Size Dependence of Exchange Bias in Co/CoO Nanostructures. Physical Review Letters (Print) , v. 108, p. 077205, 2012.

• ZHANG, Y. ; Givord, D. ; Dempsey, N.M. . The influence of buffer/capping-layer-mediated stress on the coercivity of NdFeB films. Acta Materialia (Oxford) , v. 60, p. 3783-3788, 2012.

• Pascarelli, S. ; Ruffoni, M. P. ; Trapananti, A. ; Mathon, O. ; Detlefs, C. ; Pasquale, M. ; Magni, A. ; Sasso, C. P. ; Celegato, F. ; Olivetti, E. ; Joly, Y. ; Givord, D. . Erratum: 4f charge-density deformation and magnetostrictive bond strain observed in amorphous TbFe_{2} by x-ray absorption spectroscopy [Phys. Rev. B 81, 020406(R) (2010)]. Physical Review. B, Condensed Matter and Materials Physics , v. 86, p. 019906, 2012.

• Woodcock, T.G. ; ZHANG, Y. ; HRKAC, G. ; CIUTA, G. ; Dempsey, N.M. ; SCHREFL, T. ; Gutfleisch, O. ; Givord, D. . Understanding the microstructure and coercivity of high performance NdFeB-based magnets. Scripta Materialia , v. 67, p. 536-541, 2012.

• Barthem, V. M. T. S. ; ROGALEV, A. ; WILHELM, F. ; SANT'ANNA, M. M. ; MELLO, S. L. A. ; ZHANG, Y. ; BAYLE-GUILLEMAUD, P. ; Givord, D. . Spin Fluctuations of Paramagnetic Rh Clusters Revealed by X-Ray Magnetic Circular Dichroism. Physical Review Letters , v. 109, p. 197204, 2012.

• HERRERA DIEZ, L ; BERNAND-MANTEL, A ; RANNO, L ; Givord, D ; VILA, L ; WARIN, P ; MARTY, A . Switching probability sub-distributions and asymmetric magnetization reversal in FePt nanostructures. New Journal of Physics , v. 14, p. 113024, 2012.

• Molina-Ruiz, M. ; Lopeandía, A. ; Pi, F. ; Givord, D. ; Bourgeois, O. ; Rodríguez-Viejo, J. . Evidence of finite-size effect on the Néel temperature in ultrathin layers of CoO nanograins. Physical Review. B, Condensed Matter and Materials Physics , v. 83, p. 140407, 2011.

• Zanini, L. F. ; Dempsey, N. M. ; Givord, D. ; Reyne, G. ; Dumas-Bouchiat, F. . Autonomous micro-magnet based systems for highly efficient magnetic separation. Applied Physics Letters , v. 99, p. 232504, 2011.

• Dobrynin, A. N. ; Barthem, V. M. T. S. ; Ingwiller, F. ; Givord, D. . Influence of dipolar collective effects on coercivity and demagnetizing factors in hard magnetic materials. Physical Review. B, Condensed Matter and Materials Physics , v. 81, p. 172403, 2010.

• Dumas-Bouchiat, F. ; Zanini, L. F. ; Kustov, M. ; Dempsey, N. M. ; Grechishkin, R. ; Hasselbach, K. ; Orlianges, J. C. ; Champeaux, C. ; Catherinot, A. ; Givord, D. . Thermomagnetically patterned micromagnets. Applied Physics Letters , v. 96, p. 102511, 2010.

• Pascarelli, S. ; Ruffoni, M. P. ; Trapananti, A. ; Mathon, O. ; Detlefs, C. ; Pasquale, M. ; Magni, A. ; Sasso, C. P. ; Celegato, F. ; Olivetti, E. ; Joly, Y. ; Givord, D. . 4f charge-density deformation and magnetostrictive bond strain observed in amorphous TbFe_{2} by x-ray absorption spectroscopy. Physical Review. B, Condensed Matter and Materials Physics , v. 81, p. 020406, 2010.

• Kuz min, Michael D. ; Givord, Dominique ; Skumryev, Vassil . Why the iron magnetization in Gd[sub 2]Fe[sub 14]B and the spontaneous magnetization of Y[sub 2]Fe[sub 14]B depend on temperature differently. Journal of Applied Physics , v. 107, p. 113924, 2010.

• Dobrynin, A. N. ; Gao, T. R. ; Dempsey, N. M. ; Givord, D. . Experimental determination of the magnetization dependent part of the demagnetizing field in hard magnetic materials. Applied Physics Letters , v. 97, p. 192506, 2010.

• Dehlinger, A.S. ; Le Berre, M. ; Canut, B. ; Chatelon, J.P. ; Albertini, D. ; Perrot, S. ; Givord, D. ; Rousseau, J.J. . Microstructural and magnetic properties of thick (?10?m) magnetron sputtered barium ferrite films. Journal of Magnetism and Magnetic Materials , v. 322, p. 3293-3297, 2010.

• Kustov, M. ; Laczkowski, P. ; Hykel, D. ; Hasselbach, K. ; Dumas-Bouchiat, F. ; O Brien, D. ; Kauffmann, P. ; Grechishkin, R. ; Givord, D. ; Reyne, G. ; Cugat, O. ; Dempsey, N. M. . Magnetic characterization of micropatterned Nd Fe B hard magnetic films using scanning Hall probe microscopy. Journal of Applied Physics , v. 108, p. 063914, 2010.

• Wolny, F. ; Mu?hl, T. ; Weissker, U. ; Leonhardt, A. ; Wolff, U. ; Givord, D. ; Bu?chner, B. . Magnetic force microscopy measurements in external magnetic fields comparison between coated probes and an iron filled carbon nanotube probe. Journal of Applied Physics , v. 108, p. 013908, 2010.

• Lopeandia, A. F. ; Andre?, E. ; Garden, J.-L. ; Givord, D. ; Bourgeois, O. . Highly sensitive parylene membrane-based ac-calorimeter for small mass magnetic samples. Review of Scientific Instruments , v. 81, p. 053901, 2010.

• Doublet, L. ; Ben Jemaa, N. ; Rivoirard, S. ; Bourda, C. ; Carvou, E. ; Sallais, D. ; Givord, D. ; Ramoni, P. . New contact material for reduction of arc duration for dc application. EPJ. Applied Physics (Print) , v. 50, p. 12901, 2010.

• Le Breton, J M ; Lardé, R ; Chiron, H ; Pop, V ; Givord, D ; Isnard, O ; Chicinas, I . A structural investigation of SmCo /Fe nanostructured alloys obtained by high-energy ball milling and subsequent annealing. Journal of Physics. D, Applied Physics (Print) , v. 43, p. 085001, 2010.

• Dobrynin, A. N. ; Barthem, V. M. T. S. ; GIVORD, D. . Revisiting magnetization processes in granular hard magnetic materials. Applied Physics Letters , v. 95, p. 052511, 2009.

• Suck, S. Y. ; Neu, V. ; Wolff, U. ; Bahr, S. ; Bourgeois, O. ; Givord, D. . Magnetic force microscopy analysis of magnetization reversal in exchange-biased Co/CoO nanostructure arrays. Applied Physics Letters , v. 95, p. 162503, 2009.

• Walther, A. ; Marcoux, C. ; Desloges, B. ; Grechishkin, R. ; Givord, D. ; Dempsey, N.M. . Micro-patterning of NdFeB and SmCo magnet films for integration into micro-electro-mechanical-systems. Journal of Magnetism and Magnetic Materials , v. 321, p. 590-594, 2009.

• Noce, R. D. ; Gomes, O. D. M. ; de Magalha?es, S. D. ; Wolf, W. ; Guimara?es, R. B. ; de Castro, A. C. ; Pires, M. J. M. ; Macedo, W. A. A. ; Givord, D. ; Barthem, V. M. T. S. . Magnetic properties of Fe Cu alloys prepared by pulsed electrodeposition. Journal of Applied Physics , v. 106, p. 093907, 2009.

• Woodcock, T.G. ; Khlopkov, K. ; Walther, A. ; Dempsey, N.M. ; Givord, D. ; Schultz, L. ; Gutfleisch, O. . Interaction domains in high-performance NdFeB thick films. Scripta Materialia (Oxford) , v. 60, p. 826-829, 2009.

• Rivoirard, S. ; Barthem, V. M. T. S. ; Bres, R. ; Beaugnon, E. ; de Miranda, P. E. V. ; Givord, D. . Texturing Nd Fe B magnets under high magnetic field. Journal of Applied Physics , v. 104, p. 043915, 2008.

• DEHLINGER, A ; LEBERRE, M ; BENEVENT, E ; HASSANE, H ; Givord, D ; LARREY, V ; VINCENT, D . Development of millimeter wave integrated circulator based on barium ferrite. Materials Science & Engineering. C, Biomimetic Materials, Sensors and Systems (Print) , v. 28, p. 755-758, 2008.

• Walther, A. ; Givord, D. ; Dempsey, N. M. ; Khlopkov, K. ; Gutfleisch, O. . Structural, magnetic, and mechanical properties of 5??m thick SmCo films suitable for use in microelectromechanical systems. Journal of Applied Physics , v. 103, p. 043911, 2008.

• Bourgeois, O. ; Macovei, C. ; André, E. ; Garden, J.-L. ; Chaussy, J. ; Givord, D. . A new sensor for thermodynamic measurements of magnetization reversal in magnetic nanomaterials. Journal of Magnetism and Magnetic Materials , v. 316, p. e94-e96, 2007.

• Pop, V ; Isnard, O ; Chicinas, I ; Givord, D . Magnetic and structural properties of SmCo5/?-Fe nanocomposites. Journal of Magnetism and Magnetic Materials , v. 310, p. 2489-2490, 2007.

• Dempsey, N. M. ; Walther, A. ; May, F. ; Givord, D. ; Khlopkov, K. ; Gutfleisch, O. . High performance hard magnetic NdFeB thick films for integration into micro-electro-mechanical systems. Applied Physics Letters , v. 90, p. 092509, 2007.

• Weisheit, M. ; Fahler, S. ; Marty, A. ; Souche, Y. ; Poinsignon, C. ; Givord, D. . Electric Field-Induced Modification of Magnetism in Thin-Film Ferromagnets. Science (New York, N.Y.) , v. 315, p. 349-351, 2007.

• Nogués, J. ; Skumryev, V. ; Sort, J. ; Stoyanov, S. ; Givord, D. . Shell-Driven Magnetic Stability in Core-Shell Nanoparticles. Physical Review Letters (Print) , v. 97, p. 157203, 2006.

• Weisheit, M. ; Bonfim, M. ; Grechishkin, R. ; Barthem, V. ; Fahler, S. ; Givord, D. . . IEEE Transactions on Magnetics , v. 42, p. 3072-3074, 2006.

• Dumas-Bouchiat, F. ; Nagaraja, H. S. ; Rossignol, F. ; Champeaux, C. ; Trolliard, G. ; Catherinot, A. ; Givord, D. . Cobalt cluster-assembled thin films deposited by low energy cluster beam deposition: Structural and magnetic investigations of deposited layers. Journal of Applied Physics , v. 100, p. 064304, 2006.

• Ducruet, C. ; Kornilov, N. ; de Julia?n Ferna?ndez, C. ; Givord, D. . Laser generated plasmas characterized under magnetic field. Applied Physics Letters , v. 88, p. 044102, 2006.

• Verdier, M. ; Veron, M. ; Bley, F. ; Ingwiller, F. ; Dempsey, N. M. ; Givord, D. . Characterization of Fe/Pt bulk multilayers and FePt formation. Philosophical Magazine (2003. Print) , v. 85, p. 3157-3172, 2005.

• Givord, D ; SKUMRYEV, V ; NOGUES, J . Exchange coupling mechanism for magnetization reversal and thermal stability of Co nanoparticles embedded in a CoO matrix. Journal of Magnetism and Magnetic Materials , v. 294, p. 111-116, 2005.

• BARTHEM, V ; Givord, D. . Magnetisation processes in an assembly of randomly oriented uniaxial particles. Journal of Magnetism and Magnetic Materials , v. 272-276, p. E513-E514, 2004.

• Skumryev, Vassil ; Stoyanov, Stoyan ; Zhang, Yong ; Hadjipanayis, George ; Givord, Dominique ; Nogués, Josep . Beating the superparamagnetic limit with exchange bias. Nature (London) , v. 423, p. 850-853, 2003.

• Hai, N ; Givord, D. . Hard magnetic Fe Pt alloys prepared by cold-deformation. Journal of Magnetism and Magnetic Materials , v. 262, p. 353-360, 2003.

• Givord, D . The physics of coercivity. Journal of Magnetism and Magnetic Materials , v. 258-259, p. 1-5, 2003.

• Giguere, A. ; Dempsey, N.M. ; Verdier, M. ; Ortega, L. ; Givord, D. . Giant magnetoresistance in bulk metallic multilayers prepared by cold deformation. IEEE Transactions on Magnetics , v. 38, p. 2761-2763, 2002.

• BARTHEM, V ; Givord, D. . An approach to coercivity relating coercive field and activation volume. Physica. B, Condensed Matter (Print) , v. 319, p. 127-132, 2002.

• Duc, N ; Givord, D. . Intersublattice exchange coupling in rare earth iron-based R-Fe LT intermetallics (LT=light transition elements Ti, V). Physica. B, Condensed Matter (Print) , v. 319, p. 17-20, 2002.

• Dempsey, N. M. ; Ranno, L. ; Givord, D. ; Gonzalo, J. ; Serna, R. ; Fei, G. T. ; Petford-Long, A. K. ; Doole, R. C. ; Hole, D. E. . Magnetic behavior of Fe:Al[sub 2]O[sub 3] nanocomposite films produced by pulsed laser deposition. Journal of Applied Physics , v. 90, p. 6268, 2001.

• Hai, N.H. ; Dempsey, N.M. ; Givord, D. . Magnetism in systems of exchange coupled nanograins. The European Physical Journal. B, Condensed Matter Physics (Print) , v. 24, p. 15-21, 2001.

• Bernardi, J ; Givord, D. . Preparation, magnetic properties and microstructure of lean rare-earth permanent magnetic materials. Journal of Magnetism and Magnetic Materials , v. 219, p. 186-198, 2000.

• Mackay, K. ; Bonfim, M. ; Givord, D. ; Fontaine, A. . 50 T pulsed magnetic fields in microcoils. Journal of Applied Physics , v. 87, p. 1996, 2000.

• André, Emmanuel ; Fernandez Lopeandia, Aitor ; Garden, Jean-Luc ; Givord, Dominique ; Bourgeois, Olivier . AC Nanocalorimeter on Self-Standing Parylene Membrane. New Sensors and Processing Chain. 1ed.: John Wiley & Sons, Inc., 2014, v. , p. 69-84.

• Givord, D ; Rivoirard, S. . Hard Magnetic Nanostructures and Applications. Advanced magnetic nanostructures. Berlin: Springer, 2006, v. , p. -.

• Givord, D . Nanomagnetisme. Nanomatériaux et nanochimie. Paris: Belin, 2006, v. 2, p. -.

• Givord, D . Magnetic properties-Magnetic Order. Encyclopedia of Condensed Matter Physics. Amsterdam: Elsevier, 2005, v. , p. -.

• Givord, D ; Rossignol, F. . Coercivity. Rare-Earth - Fe High Performance Magnets. Oxford: OUP, 1996, v. , p. -.

• Barthem, V. M. T. S. ; MORI, T. ; RAMOS, A. ; TOLENTINO, H.C.N. ; CRIGINSKI-CEZAR, J. ; SOARES, M. ; FERNANDEZ-OUTON, L. ; Macedo, W. A. A. ; Givord, D . Revealing grain decoupling in antiferromagnetic Mn2Au ultra-thin films. 2017. (Apresentação de Trabalho/Congresso).

• Givord, D . Concepts and Perspectives of Spintronics. 2016. (Apresentação de Trabalho/Congresso).

• Barthem, V. M. T. S. ; RAMOS, A. ; TOLENTINO, H.C.N. ; FERNANDEZ-OUTON, L. ; HERRERA ARAGON, F. ; Macedo, W. A. A. ; BERNAND-MANTEL, A ; RANNO, L ; ALLENDE, S. ; Givord, D . Exchange-bias in terms of the magnetization reversal fields. 2016. (Apresentação de Trabalho/Congresso).

• Givord, Dominique . A new approach to exchange-bias and its application to Mn2Au. 2015. (Apresentação de Trabalho/Congresso).

• Barthem, V. M. T. S. ; RAMOS, A. Y. ; DE SANTIS, M. ; TOLENTINO, H.C.N. ; FERNANDEZ-OUTON, L. ; ARAGON, F. H. ; MACEDO, W.A.A. ; Givord, D. . Growth of Mn2Au thin films for potential use in antiferromagnetic spintronics. 2015. (Apresentação de Trabalho/Congresso).

• Barthem, V. M. T. S. ; FERNANDEZ-OUTON, L. ; DIAS, G. ; COLIN, C. V. ; MAYAFFRE, H. ; JULIEN, M.-H. ; Macedo, W. A. A. ; BERNAND-MANTEL, A. ; RANNO, L. ; Givord, D . Exchange-bias and transport effects in Mn2Au. 2014. (Apresentação de Trabalho/Congresso).

• Givord, D. . Les matériaux magnétiques qui transforment notre vie quotidienne. 2010 (Conférence Université de tous les savoirs) .

• Givord, D. . Magnetism. 2005 (Conférence année mondiale de la Physique) .

Projetos de pesquisa

• 2013 - Atual

  Hard magnets, Descrição: New routes to develop coercivity in materials conating no rare-earth (RE) element or rduced amount of RE elements.. , Situação: Em andamento; Natureza: Pesquisa. , Integrantes: Dominique Givord - Integrante / Barthem, V. M. T. S. - Integrante / Dempsey, N.M. - Coordenador.

• 2012 - Atual

  ETAM TAMRS, Descrição: Giant Magnetoresistance (GMR) and Tunnel Magnetoresistance (TMR) are the two most important phenomena exploited in Spintronics, the field of electronics which exploits the electron spin. A specific constraint common to GMR and TMR devices is the need of two specific magnetic elements, of which magnetic moments can be made parallel or antiparallel in some controlled manner. The larger magnetoresistance generally found in TMR devices compared to GMR ones is due to the fact that tunneling depends critically on hybridization between states in the metal on one side and in the barrier on the other. One can think of a new device in which the resistance variation would result from the change in the tunnel resistance across a barrier resulting from the rotation of the moment in a magnetic element, under the effect of the Spin-Orbit Coupling (SOC). This is Tunnel Anisotropic Magnetoresistance (TAMR). TAMR requires one magnetic electrode only. This opens the way to exploring a number of new materials for spintronic devices. The first general objective of ETAM TAMR is to progress in the understanding of TAMR. One of the key questions to be answered is whether noncrystalline TAMR (depending on the direction of the moment with respect to the current, independent of the crystal structure) dominates crystalline TAMR (dependent on the orientation of the current and/or the moments within the crystal structure). A systematic experimental study in model FePt and CoPt films will be realized (temperature and angular dependence in particular). One will consider as well the dependence of TAMR on the nature of the insulating barrier. The experimental results will be compared to theoretical predictions based on first-principle tight-binding electronic structure calculations and using the two-channel version of Landauer-Bütttiker theory of transport. Model calculations will permit varying independently the microscopic parameters. The second general objective of ETAM TAMR is to find syste. , Situação: Em andamento; Natureza: Pesquisa. , Integrantes: Dominique Givord - Integrante / V.M.T.S. Barthem - Integrante / Patrick Warin - Integrante / Laurent Ranno - Integrante / Macedo, W. A. A. - Integrante / Marty, A. - Integrante / José de Albuquerque e Castro - Coordenador / Angelo Gomes - Integrante / Mauricio Pampelone - Integrante., Financiador(es): Conselho Nacional de Desenvolvimento Científico e Tecnológico - Auxílio financeiro / Agence Nationale de la Recherche - Auxílio financeiro.

• 2011 - 2014

  MIME, Descrição: Effect of magnetic forces on morphogenesis. , Situação: Em andamento; Natureza: Pesquisa. , Integrantes: Dominique Givord - Coordenador., Financiador(es): Institut Néel / CNRS, Département Nanoscience - Auxílio financeiro.

• 2011 - 2013

  NOVAS PARTÍCULAS MAGNÉTICAS PARA A BIOLOGIA, Descrição: In this project, we propose to study the relatively unexplored and emerging field of using electric (E) fields to control the intrinsic magnetic properties (e.g. Curie temperature (Tc), magnetic anisotropy (K) and exchange bias field (HB) in metallic systems and exploit these effects in novel solid state spin-based devices. The application of E-fields to actuate a magnetic response is not widespread. For metallic systems, there are very limited experimental [15, 16] and theoretical studies [17-20]. Most research has focused on multiferroic [21-23] or dilute magnetic semiconductor (DMS) materials [24- 26] where observed phenomena often involve low TC materials. Metallic systems have the potential to move these phenomena to room temperature and above. The new research program outline here will address the control at room temperature of the intrinsic magnetic properties of transition metals and their alloys and compounds. All studied systems will be chosen such that they magnetically order near or above room temperature. Because these materials are conducting, the E-field (and its effect on magnetism) manifests itself via charging effects, which are confined to the near surface region; therefore this research will focus on thin films and heterostructured devices where the surfaces can dramatically affect the magnetic properties. The 2 main goals will be to: (i) Systematically investigate the E-field effects on the magnetic properties (anisotropy, ordering temperature, exchange bias) of transition-metal films and the coupling at magnetic-oxide/metal interfaces. (ii) Use E-field control of magnetism and spintronic phenomena in integrated 3 terminal devices. The research will explore new phenomena in E-field control of nanomagnetic systems with the transformative goal to provide the scientific underpinnings of next generation energy efficient, ultrafast and ultrasmall magneto-electronic devices.. , Situação: Em andamento; Natureza: Pesquisa. , Integrantes: Dominique Givord - Integrante / V.M.T.S. Barthem - Coordenador / Cernicchiaro G. - Integrante / Priscilla Finotelli - Integrante., Financiador(es): Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do RJ - Auxílio financeiro.

• 2010 - 2013

  ELECMADE, Descrição: In this project, we propose to study the relatively unexplored and emerging field of using electric (E) fields to control the intrinsic magnetic properties (e.g. Curie temperature (Tc), magnetic anisotropy (K) and exchange bias field (HB) in metallic systems and exploit these effects in novel solid state spin-based devices. The application of E-fields to actuate a magnetic response is not widespread. For metallic systems, there are very limited experimental [15, 16] and theoretical studies [17-20]. Most research has focused on multiferroic [21-23] or dilute magnetic semiconductor (DMS) materials [24- 26] where observed phenomena often involve low TC materials. Metallic systems have the potential to move these phenomena to room temperature and above. The new research program outline here will address the control at room temperature of the intrinsic magnetic properties of transition metals and their alloys and compounds. All studied systems will be chosen such that they magnetically order near or above room temperature. Because these materials are conducting, the E-field (and its effect on magnetism) manifests itself via charging effects, which are confined to the near surface region; therefore this research will focus on thin films and heterostructured devices where the surfaces can dramatically affect the magnetic properties. The 2 main goals will be to: (i) Systematically investigate the E-field effects on the magnetic properties (anisotropy, ordering temperature, exchange bias) of transition-metal films and the coupling at magnetic-oxide/metal interfaces. (ii) Use E-field control of magnetism and spintronic phenomena in integrated 3 terminal devices. The research will explore new phenomena in E-field control of nanomagnetic systems with the transformative goal to provide the scientific underpinnings of next generation energy efficient, ultrafast and ultrasmall magneto-electronic devices.. , Situação: Em andamento; Natureza: Pesquisa. , Integrantes: Dominique Givord - Integrante / Patrick Warin - Integrante / Alain Marty - Coordenador / Dafiné Ravelosona - Integrante., Financiador(es): Agence Nationale de la Recherche - Auxílio financeiro.

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