guest ::
| Home > Publications database > Single crystal diffractometers HEiDi and POLI: (un)polarised neutrons to probe crystallographyc and magnetic domains |
| Home > Publications database > Single crystal diffractometers HEiDi and POLI: (un)polarised neutrons to probe crystallographyc and magnetic domains |
| Poster (After Call) | FZJ-2019-00393 |
; ; ;
2018
Abstract: HEiDi and POLI are the only single-crystal neutron diffractometers in Germany and two of the very few in the world which are located at a hot neutron source to enlarge the flux of neutrons with short wavelengths. It allows to minimize the absorption problems associated with certain elements and to explore extremely large portions of reciprocal space. HEiDi is a typical 4-circle diffractometer with Eulerian cradle for detailed studies on crystal and magnetic structures in the temperature range 2.5–1300 K. POLI is an independent diffractometer, which extends the possibilities of HEiDi to the milli-Kelvin range and external magnetic fields as well as offers in addition different types of polarized neutron techniques: Flipping-ratio measurements in applied magnetic field for ferromagnetic and paramagnetic materials and spherical neutron polarimetry in zero field for more complex magnetic structures. Due to their possibilities, both instruments contribute to many topics, e.g. in the energy and information sector. Here, on examples of multiferroic and superconducting materials, we give an overview of the instruments possibilities in studying of crystal and magnetic structures and phase transitions of solids in general, and their crystallographic and magnetic domains (microstructures) in particular.
Keyword(s): Magnetic Materials (1st) ; Instrument and Method Development (1st) ; Condensed Matter Physics (2nd) ; Crystallography (2nd) ; Magnetism (2nd) ; Instrument and Method Development (2nd)
|
The record appears in these collections: |