Julio Ramírez-Castellanos graduated with a BAS (Bachelor of Science degree) in Solid State Chemistry at Complutense University of Madrid. Dr. Ramirez-Castellanos also visited/worked at/studied at several European research centers, including the Laboratoire de Cristallograhie (CNRS) in Grenoble (FR), at Prof. Maximo Marezio´s working group, under the supervision of Dr. J. J. Capponi. He also joined at Prof. S. Palmer's group, at Physics Department in Warwick University, Coventry (UK). Furthermore, Dr. Ramirez-Castellanos studied the determination of crystal structures, and the processing of electronic images obtained through electron microscopy with Prof. Sven Hovmoller, in Arrhenius Laboratory at Structural Chemistry Department, Stockholm University (SE). He completed research with a postdoctoral fellowship with Dr. Yoshio Matsui at the National Institute for Materials Science (N.I.M.S) and Prof. Ryozo Yoshizaki´s group at Cryogencis Center, Tsukuba (Japan). Julio Ramírez-Castellanos currently works at the Facultad de Químicas, Complutense University of Madrid. Julio does research in Solid State Chemistry, Nanotechnology and Materials Chemistry. His current projects include functional oxide materials, structural and microstructure characterization and physical properties.