Personnel of the ICMAB

Name:Obradors Berenguer, Francesc Xavier
Date of assignement:1-5-1991
Date and place of birth:Manresa, Barcelona, Espanya; 28-1-1956

University degrees:
Facultat de Fí­sica, Universitat de Barcelona, 1978
Doctorat, universitat i any:
Fí­sica, Universitat de Barcelona, 1982
Ciencia de Materials, Universitat de Grenoble, França, 1983
Magnetic materials
Superconducting Materials
Oxide nanostructures
Most significative academic merits:
Member Academy of Sciences and Arts, Barcelona
Fellow Institut of Physics, U.K.
Medal Narcis Montoriol, Generalitat de Catalunya
Doctor Honoris Causa University of Pitesti, Roumania
Editor Physica C- Superconductivity and its applications
Duran i Farell Prize to the Technological Research
National Prize Blas Cabrera of Physical Sciences, Materials and Earth studies
Chevalier dans l'Ordre des Palmes Academiques, France
ENDESA-NOVARE Prize to Energy Efficiency
Prize Gold Epsilon, Ceramic and Glass Spanish Society
Number of published articles:513
H Factor:39

Researcher Id:

Most significatives scientific articles:
Strong isotropic flux pinning in YBa2Cu3O7-x ? BaZrO3 nanocomposite superconductor films derived from chemical solutions
Authors:J.Gutiérrez, A. Llordés, J. Gázquez, M. Gibert, N.Romà, S. Ricart, A. Pomar, F.Sandiumenge, N.Mestres, T. Puig, X. Obradors
Reference:Nature Materials 6, 367 (2007)

Self-organization of heteroepitaxial CeO2 nanodots grown from chemical solutions
Authors:M. Gibert, T. Puig, X. Obradors, A. Benedetti, F. Sandiumenge and R. Hühne
Reference:Advanced Materials, 19 (22), pp. 3937-3942, (2007)

Low temperature surface spin glass transition in ?-Fe2O3 nanoparticles
Authors:B. Martínez, X. Obradors, Ll. Balcells, A. Rouanet, C. Monty
Reference:Phys. Rev. Lett. 80, 181 (1998)

Nanoscale strain-induced pair suppression as a vortex-pinning mechanism in high-temperature superconductors
Authors:Llordés, A.; Palau, A.; Gázquez, J.; Coll, M.; Vlad, R.; Pomar, A.; Arbiol, J.; Guzmán, R.; Ye, S.; Rouco, V.; Sandiumenge, F.; Ricart, S.; Puig, T.; Varela, M.; Chateigner, D.; Vanacken, J.; Gutiérrez, J.; Moshchalkov, V.; Deutscher, G.; Magen, C.; Obradors, X
Reference:Nature Materials, 11, pp. 329-336, (2012)

The colossal magnetoresistance of ferromagnetic manganites : structural tuning and mechanisms
Authors:J.Fontcuberta , B.Martí­nez , A.Seffar ,J.L.Garcí­a-Muñoz , S.Piñol , X.Obradors
Reference:Phys.Rev.Lett 76 , 1122 (1996)

Last update: 2014-03-03 15:58:09

Research Fields:

My research interests focus on the magnetic and superconducting properties of materials, particularly of transition metal oxides. The phenomenology investigated range from ferrimagnetism, geometric magnetic frustration, spin glasses, nanoparticles, metal-insulator transitions, colossal magnetoresistance in manganites to vortex matter properties in superconductors in relationship with microstructural features. My research has involved, during the last 20 years, a large spectrum of experimental techniques and materials preparation approaches. This includes structural studies with X-ray and neutron diffraction, magnetic structures with neutron diffraction, magnetization and transport properties at low temperatures under high magnetic fields and under pressure. I have been involved in the use of several materials preparation procedures including ceramic powders, bulk materials, including directional solidification and high pressures, and more recently thick and thin films from chemical solutions. The relationship between materials processing and microstructural investigations by means of electron microscopy has been one of my major concerns in view of developping practical applications based on the investigated materials. During my career I have been scientific visitor in CNRS-Grenoble (France), INSA-Toulouse (France), University of Liverpool (U.K.), Argonne National Laboratory (USA) and University of California at San Diego (USA). I have also developed a large number of international scientific collaborations mainly with teams from France, Germany, USA, Argentina, Brasil, U.K. and Austria. From my position of head of the Department I have promoted an interdisciplinary team having a global approach to the scientific and technological problems. Most of the research projects developed in the Department range from the roots of materials preparation to the physical properties,with a close relationship with the microstructure. Finally, when industrial interest is raised, we develop device demonstrators and we investigate materials integration into electrotechnical systems. The generation of proprietary knowledge and its transfer to the european industry, through collaborative research, has been very intense in the last 10 years. At present the focus of my research is on high temperature superconductors, particularly on melt textured materials and its applications (fault current limiters, motors, levitation) and on low cost preparation of high critical current coated conductors.

Contact Data:

+ 34 935 801 853
Internal Phone Number:
P.O. Box:
+ 34 935 805 729
obradors (at)
Superconducting Materials and Nanostructure at Large Scale
Institut de Ciència de Materials de Barcelona

Consejo Superior de Investigaciones Científicas

Campus de la Universitat Autònoma de Barcelona

08193 Bellaterra

Catalunya, Espanya