Insights into the coupled phenomena in molecular multiferroic (ND<sub>4</sub>)<sub>2</sub>[FeCl<sub>5</sub>(D<sub>2</sub>O)] via inelastic neutron scattering studies
ORAL
Abstract
(ND4)2[FeCl5(D2O)] is a rare molecular magnet exhibiting direct coupling between magnetism and electric polarization as well as a very rich magnetic field versus temperature phase diagram[1-3]. In order to gain a deep understanding of the emergent coupled phenomena, we performed inelastic neutron scattering experiments to investigate the dynamics in this material. Our data analysis shows the spin dynamics can be described by a Heisenberg Hamiltonian model with an easy-plane anisotropy that captures the key observations. Our inelastic neutron scattering results also reveal the role the ion played in the intriguing properties observed in (NH4)2[FeCl5(H2O)].
References
[1] M Ackermann et al, New Journal of Physics 15, 123001 (2013).
[2] W. Tian et al, Phys. Rev. B 94, 214405 (2016).
[3] W. Tian et al, Phys. Rev. B 98, 054407 (2018).
References
[1] M Ackermann et al, New Journal of Physics 15, 123001 (2013).
[2] W. Tian et al, Phys. Rev. B 94, 214405 (2016).
[3] W. Tian et al, Phys. Rev. B 98, 054407 (2018).
*1Research conducted at ORNL's Spallation Neutron Source and High Flux Isotope Reactor was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U. S. Department of Energy.
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Presenters
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Wei Tian
- Oak Ridge National Lab
- Neutron Scattering Science Division, Oak Ridge National Laboratory
- Oak Ridge National Laboratory
- Oak Ridge National Laboratory, Oak Ridge