1. Laboratorio di Scienza dei Materiali e Nanotecnologie,
LMNT-D.A.D.U., Università di Sassari and CR-INSTM, Palazzo Pou Salit, Piazza Duomo 6, 07041 Alghero, Sassari, Italy
2. Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9/IV 8010
Graz, Austria
3. Division of
Materials Science and Engineering, CSIRO, Private Bag 33, Clayton South MDC 3169, Australia
4. Department of Materials Science, Graduate
School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan