English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We report a comprehensive inelastic neutron scattering study of the hybridmolecule-based multiferroic compound (ND4)2FeCl5D2O in the zero-fieldincommensurate cycloidal phase and the high-field quasi-collinear phase. Thespontaneous electric polarization changes its direction concurrently with thefield-induced magnetic transition, from mostly aligned with thecrystallographic a-axis to the c-axis. To account for such change ofpolarization direction, the underlying multiferroic mechanism was proposed toswitch from the spin-current model induced via the inverseDzyalloshinskii-Moriya interaction to the p-d hybridization model. We perform adetailed analysis of the inelastic neutron data of (ND4)2FeCl5D2O using linearspin-wave theory to quantify magnetic interaction strengths and investigatepossible impact of different multiferroic mechanisms on the magnetic couplings.Our result reveals that the spin dynamics of both multiferroic phases can bewell-described by a Heisenberg Hamiltonian with an easy-plane anisotropy. We donot find notable differences between the optimal model parameters of the twophases. The hierarchy of exchange couplings and the balance among frustratedinteractions remain the same between two phases, suggesting that magneticinteractions in (ND4)2FeCl5D2O are much more robust than the electricpolarization in response to delicate reorganizations of the electronic degreesof freedom in an applied magnetic field.

Magnetic Excitations of the Hybrid Multiferroic (ND4)2FeCl5D2O