Dr. Veintemillas graduated in Chemistry in 1980 at the University of Barcelona, and received a pH. D. degree from the Complutense University of Madrid in 1986 with a research work on crystal growth from boiling solutions. He joined the Spanish Council of Scientific Research (CSIC) in 1987. His scientific objectives are focused in the development of new methods for the preparation of materials and the study of the physicochemical processes involved in the synthesis. Until the year 1995 he worked in the Materials Research Institute of Barcelona CSIC, in the crystal growth of water soluble ferroelectric materials such as KDP and LAP for non linear optics. Then he moved to the Materials Research Institute of Madrid CSIC to develop the synthesis of magnetic nanoparticles from laser pyrolysis and actually he works in the field of preparation and biomedical uses of magnetic nanoparticles. Dr. Veintemillas has published more than one hundred papers concerning crystal growth and preparation of materials.