[1] Forschungszentrum Julich, Inst Energy Mat & Devices Struct & Funct Mat IMD 1, Wilhelm Johnen Str, D-52428 Julich, Germany
[2] Otto von Guericke Univ, Inst Mat Technol & Mech, Univ Pl 2, D-39106 Magdeburg, Germany
[3] Karlsruhe Inst Technol, Inst Appl Mat Appl Mat Phys IAM AWP, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
[4] Rhein Westfal TH Aachen, Fac 5, Chair Energy Engn Mat, Templergraben 55, D-52056 Aachen, Germany