Juan Rodríguez Carvajal

Senior Fellow of the ILL- Institut Laue-Langevin

Impact of Neutron Diffraction in Hard Condensed Matter Physics and Chemistry

June 21. 9:00

Juan Rodriguez-Carvajal (JRC) has a long experience in diffraction physics of neutrons. He is an experimentalist with a strong component in computing and theoretical aspects of diffraction. He got his PhD in Solid State Physics at the University of Barcelona in 1984 and held different teaching positions in two of the three universities of Barcelona up to 1986, when he got a position as scientific researcher at the CSIC in the Materials Science Institute of Barcelona. From 1988 to 1994 he was Physicist at the ILL (in charge of D4 and lately of D9) and in secondment at the LLB (Saclay) from 1992 (responsible of D1A). From 1994 to 2006 he was working at the LLB, as CEA research engineer, and he came back to the ILL to take the direction of the Diffraction Group. During his career at CEA he was promoting and was in charge of two instrumental projects: G4.2 in partnership with the PNPI at Gatchina-Petersburg (Russia), and the upgrade of the thermal neutron powder diffractometer 3T2.

JRC has been involved in large scale projects for developing new neutron sources, in particular the European Spallation Source (ESS). He was the Coordinator for the Structural Science and Solid State Chemistry group of the Scientific Case of the ESS project (1995-1996); he was member of the Instrumentation Task Group of the ESS (2000-2002) and member of Scientific Advisory Committee of the ESS (2009-2012). JRC has participated in many committees and selection panels for research projects in large scale facilities, in particular at ISIS (U.K.), PSI (Switzerland) and SNS (USA). JRC has, and has had, also a strong activity in training young researchers through many courses on diffraction and crystallography organized by universities and research institutions in many places of the world.

JRC has been the head of the Diffraction Group at ILL from March 2006 to October 2013. The diffraction group was in charge of 12 beam lines: 3 monochromatic single crystal diffractometers, 2 single crystal polarized neutron diffractometers, 2 Laue diffractometers, 3 powder diffractometers, 1 amorphous and liquid diffractometer and 1 engineering diffractometer. From 2013 up to now, he has returned to full time scientific research and software development within the ILL as a Senior Fellow.

During the major part of his career, JRC has been interested in the following fields:

  1. Data analysis and software development in Crystallography and Diffraction Physics.
  2. Theoretical analysis of magnetic Structures. Frustration and low dimensional magnetism.
  3. Physics of Transition Metal-Rare Earth and Superconducting oxides and intermetallics. Metal-Insulator transitions and magnetic ordering in nickel and copper oxides. Magnetic structures of Rare Earth Intermetallics. Structural and magnetic aspects of oxides presenting colossal magnetoresistance, charge, spin and orbital ordering phenomena. More recently, JRC has been interested in energy materials, mostly oxides and phosphates, used as cathode elements in Ni and Li-ion batteries and molecular multiferroics.

Author/co-author of 287 regular papers in journals, 109 papers in journals resulting from proceedings, 61 reports/book/proceedings contributions and about 300 communications in meetings.  The total number of article citations is more than 24250 (Web of Science), 37900 (Google Scholar). Invited to more than 90 international events. Supervisor of 10 doctoral theses, 28 stages and post-docs.

Awarded: Award for Distinguished Powder Diffractionist” from the International Committee of EPDIC (Warsaw, 2008), Barrett Award 2011 of the Denver X-ray Conference for “exceptional contributions to powder diffraction”.

Author of FullProf, one of the most used powder diffraction computer programs in the world.  (About 11000 citations of the article Physica B 192, 55 (1993) plus more than 8000 direct citations of the use of the program).