[1] CEA, LETI, MINATEC, F-38054 Grenoble, France
[2] Ecole Normale Super Lyon, CNRS, USR, UMR 5570, F-3010 Lyon, France
[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[4] CEA LITEN DEHT LPCE, F-38054 Grenoble, France
[5] Univ Grenoble 1, Lab Geodynam Chaines Alpines, F-38041 Grenoble, France