Research assistant and Researcher in inorganic chemistry at Lund University 1976-1986.

Postdoctoral Fellow, Centre National de la Recherche Scientifique, Laboratoire de Chimie de Coordination, Toulouse, France, 1977.

Research associate, Department of Chemistry, Center for Solid State Science, Arizona State University, Tempe, USA 1978-1979 and 1986.

Special research position in high resolution electron microscopy and the structure of solids at Lund University 1986-1992.

Visiting professor in structural chemistry at the Technical University of Denmark, 1987.

Lecturer and research scientist in inorganic chemistry, Lund University, 1992-1994.

Professor in materials chemistry, specially high resolution electron microscopy at Lund University, 1994-.

Awarded Visiting scientist, from the Japan Society for the Promotion of Science, at the Tohoku University in Sendai. One month 1996.

Visiting scientist, Department of Chemistry, Center for Solid State Science, Arizona State University, Tempe, USA 2003.