1. Department of Physics, University of Osijek, Trg Ljudevita Gaja 6, HR-3100 Osijek, Croatia
2. Institute for Materials Research-UNAM, Ciudad Universitaria Coyoacan, C.P. 04510 Mexico D.F., Mexico
3. Institute of Physics, Faculty of Science, P.J. Šafárik University in Košice, Park Angelinum 9, 041 54 Košice, Slovak Republic
4. Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
5. Institute of Physics, Bijenička cesta 46, P. O. Box 304, HR-10001 Zagreb, Croatia
6. Department of Physics, Faculty of Science, University of Zagreb, Bijenička cesta 32, HR-10002 Zagreb, Croatia