Speaker
Jun Sugiyama
(CROSS Neutron Science and Technology Center)
Description
GdNi$_4$B is currently one of the optimal magnetocaloric materials for hydrogen liquefaction, but the exact theoretical causes for that are unknown. GdNi$_4$B is a metallic compound exhibiting a ferromagnetic transition at around 50 K, below which they work as a magnetic refrigeration material. Therefore, their ferromagnetic structures should play a key role to determine their optimal magnetic refrigeration performance. Unfortunately, huge neutron absorption of Gd makes it impossible to measure a neutron diffraction pattern. We therefore carried out a muSR experiment on these materials to deduce the magnetic structures with the help of first principles calculations and the muSR data on related materials.
| juns@triumf.ca | |
| Funding Agency | JSPS KAKENHI Grant Numbers JP18H01863, JP20K21149, and JP23H01840. |
| Supervisors Email | juns@triumf.ca |
| Did you request an Invitation Letter for a Visitors Visa Application | No |
Primary author
Jun Sugiyama
(CROSS Neutron Science and Technology Center)
Co-authors
Dr
Kazuki Ohishi
(CROSS Neutron Science and Technology Center)
Izumi Umegaki
(KEK (High Energy Accelerator Research Organization))
Martin Månsson
(KTH)
Hiroya Sakurai
(NIMS)
Dr
Kanako Yoshizawa
(The Research Organization for Information Science and Technology (RIST))
Dr
Gerald Morris
(TRIUMF)
Kenji Kojima
(TRUIMF)
