1. Univ. Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
2. CRISMAT, CNRS, Normandie Univ, ENSICAEN, UNICAEN, 14000 Caen, France
3. Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
4. Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya 456-8587, Japan
5. Institut Jean Lamour, UMR 7198, CNRS, Université de Lorraine, 54011 Nancy, France
6. Synchrotron SOLEIL, L’orme des Merisiers, 91192 Gif-sur-Yvette, France