Seminars

X-ray spectroscopy in very high magnetic fields

by Cornelius Strohm (ESRF, Grenoble)

Friday, May 3, 2013 from to (Europe/Berlin)
at AER19/4.14
Description
The combination of synchrotron X-ray spectroscopy and pulsed high magnetic fields opens new opportunities for the study of magnetic materials. At the ESRF, we have developed X-ray magnetic circular dichroism for element and orbital selective studies of magnetism, and Nuclear Forward Scattering of synchrotron radiation to perform isotope selective hyperfine spectroscopy in high magnetic fields.  A miniature coil setup, developed internally, reaches fields of 30 T and covers temperatures from 5 K to 250 K. This seminar gives an overview on the coils and detection schemes along with application examples such as element selective magnetometry in Erbium Iron Garnet and a study of the spin structure in Copper Iron Oxide. Progress on current development efforts aimed at X-ray spectroscopy in multi extreme conditions of field, temperature, and pressure for the study of strongly correlated electron systems will be presented. An outlook will be devoted to ideas to venture into the realm of mega-Gauss experiments in the future.