[1] Salzburg Univ, Dept Chem & Phys Mat, Div Mat Sci & Mineral, Hellbrunnerstr 34, A-5020 Salzburg, Austria
[2] MIT, Ctr Mat Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA
[3] Forschungszentrum Julich GmbH, Inst Energy & Climate Res Mat Synth & Proc IEK 1, D-52425 Julich, Germany
[4] Forschungszentrum Julich GmbH, JCNS, Outstn SNS, Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[5] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA
[6] Nat Hist Museum Vienna, Burgring 7, A-1010 Vienna, Austria
[7] Forschungszentrum Julich GmbH, Helmholtz Inst Munster, D-52425 Julich, Germany