Magnetic structure and spin excitations in new multiferroic material Cu2OCl2
We recently found a new class of spin-induced multiferroic materials - transition metal oxyhalides. Here, we propose to obtain more detailed information about magnetic structure and chirality in Mellanothallite Cu2OCl2 that go beyond our recent powder neutron diffraction study. Moreover, we propose to study also the lattice and spin excitations in multiferroic Melanothallite by means of inelastic neutron scattering combining both the IN6 (cold) and IN4 (thermal) TOF spectrometers. The IN6 and IN4 time-of-flight neutron spectrometer will be ideal for getting an overview of the entire energy range of excitations. Finally, we would like to search for hybridized phonon-magnon excitations in multiferroic Melanothallite that has a much higher critical temperature than most other known spin-induced multiferroic materials. Furthermore, we also would like to understand the driving force for the observed magnetic structure and the difference between pyrochlore iridiates, osmates and Melanothallite. Why is the claimed "all-in-all-out" spin structure absent in Cu2OCl2 and what is the hitherto unknown mechanism that induces multiferroicity in this new class of multiferroic materials?
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
KOMAREK Alexander Christoph and ZBIRI Mohamed. (2017). Magnetic structure and spin excitations in new multiferroic material Cu2OCl2. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1553
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.