High-Field Magnetoelectric and Spin-Phonon Coupling in Multiferroic (NH4)2[FeCl5·(H2O)]

KD Hughey, M Lee, J Nam, AJ Clune… - Inorganic …, 2022 - ACS Publications
We combine high field polarization, magneto-infrared spectroscopy, and lattice dynamics
calculations with prior magnetization to explore the properties of (NH4) 2 [FeCl5·(H2O)]─ a …

Pressure–Temperature–Magnetic Field Phase Diagram of Multiferroic (NH4)2FeCl5·H2O

AJ Clune, NC Harms, KA Smith, W Tian, Z Liu… - Inorganic …, 2024 - ACS Publications
We combined synchrotron-based infrared absorbance and Raman scattering
spectroscopies with diamond anvil cell techniques and a symmetry analysis to explore the …

[HTML][HTML] Magnetic field-temperature phase diagram of multiferroic (NH4)2FeCl5·H2O

AJ Clune, J Nam, M Lee, KD Hughey, W Tian… - npj Quantum …, 2019 - nature.com
Owing to their overall low energy scales, flexible molecular architectures, and ease of
chemical substitution, molecule-based multiferroics are extraordinarily responsive to …

Linking motion to magnetism in molecular multiferroic : A neutron vibrational spectroscopy study

W Tian, LL Daemen, YQ Cheng, F Li… - Physical Review B, 2024 - APS
We present a neutron vibrational spectroscopy study to investigate the influence of NH 4+
motion on the magnetism in [(NH 4) 1− x K x] 2 [FeCl 5 (H 2 O)]. The parent compounds,(NH …

Magnetoelectric coupling in the mixed erythrosiderite

D Brüning, T Fröhlich, M Langenbach, T Leich… - Physical Review B, 2020 - APS
We present a study of the dielectric, structural, and magnetic properties of the multiferroic or
linear magnetoelectric substitution series [(NH 4) 1− x K x] 2 [Fe Cl 5 (H 2 O)]. Pyroelectric …

Multiferroic domain relaxation in

S Biesenkamp, K Schmalzl, P Becker, L Bohatý… - Physical Review B, 2023 - APS
The molecular compound (NH 4) 2 [FeCl 5 (H 2 O)] is a type-II multiferroic material, in which
incommensurate cycloidal order directly induces ferroelectric polarization. The multiferroic …

Phase transitions of the ferroelectric under magnetic field

S Li, RS Fishman - Physical Review B, 2021 - APS
Due to the strong coupling between magnetism and ferroelectricity,(ND 4) 2 FeCl 5· D 2 O
exhibits several intriguing magnetic and electric phases. In this Letter, we include higher …

First-principles study of the structural, electronic, magnetic, and ferroelectric properties of a charge-ordered iron (ii)-iron (iii) formate framework

G Tang, W Ren, J Hong, A Stroppa - The Journal of Chemical Physics, 2019 - pubs.aip.org
Density functional theory calculations have been performed for the structural, electronic,
magnetic, and ferroelectric properties of a mixed-valence Fe (ii)–Fe (iii) formate framework …

Neutron scattering studies on multiferroic and frustrated systems

S Biesenkamp - 2022 - kups.ub.uni-koeln.de
This thesis reports thorough studies on multiferroic and frustrated systems, whereby specific
focus was put on the investigation of multiferroic domain dynamics. For the respective …

Using applied field, pressure, and light to control magnetic states of materials

AJ Clune - 2021 - trace.tennessee.edu
Due to their low energy scales, flexible architectures, and unique exchange pathways,
molecule-based multiferroics host a number of unique properties and phase transitions …