46 citations · 226 across the 10 of their papers we have counts for
10 papers
Ionic conductivity of a lithium-doped deep eutectic solvent: Glass formation and rotation-translation coupling
A. Schulz, P. Lunkenheimer, A. Loidl
Deep eutectic solvents with admixed lithium salts are considered as electrolytes in electrochemical devices like batteries or supercapacitors. Compared to eutectic mixtures of hydr…
Rotational dynamics, ionic conductivity, and glass formation in a ZnCl2-based deep eutectic solvent
A. Schulz, P. Lunkenheimer, A. Loidl
Glass formation and reorientational motions are widespread, but often-neglected features of deep eutectic solvents, although both can be relevant for the technically important ioni…
Dipolar relaxation, conductivity, and polar order in AgCN
P. Lunkenheimer, A. Loidl, G. P. Johari
By using dielectric spectroscopy in a broad range of temperatures and frequencies, we have investigated dipolar relaxations, the dc conductivity, and the possible occurrence of pol…
Dipolar spin ice states with fast monopole hopping rate in CdErX (X = Se, S)
Shang Gao, Oksana Zaharko, Vladimir Tsurkan +19
Excitations in a spin ice behave as magnetic monopoles, and their population and mobility control the dynamics of a spin ice at low temperature. CdErSe is reported to have…
Effect of adding nanometre-sized heterogeneities on the structural dynamics and the excess wing of a molecular glass former
S. Gupta, J. K. H. Fischer, P. Lunkenheimer +4
We present the relaxation dynamics of glass-forming glycerol mixed with 1.1 nm sized polyhedral oligomeric silsesquioxane (POSS) molecules using dielectric spectroscopy (DS) and tw…
On the multiferroic skyrmion-host GaV4S8
S. Widmann, E. Ruff, A. Günther +6
The lacunar spinel GaV4S8 exhibits orbital ordering at 44 K and shows a complex magnetic phase diagram below 12.7 K, which includes ferromagnetic and cycloidal spin order. At low b…
Magnetic phase diagram of the helimagnetic spinel compound ZnCr2Se4 revisited by small-angle neutron scattering
A. S. Cameron, Y. V. Tymoshenko, P. Y. Portnichenko +7
We performed small-angle neutron scattering (SANS) measurements on the helimagnetic spinel compound ZnCr2Se4. The ground state of this material is a multi-domain spin-spiral phase,…
Polar Dynamics at the Jahn-Teller Transition in Ferroelectric GaV4S8
Zhe Wang, E. Ruff, M. Schmidt +4
We present a dielectric spectroscopy study of the polar dynamics linked to the orbitally driven ferroelectric transition in the skyrmion host GaV4S8. By combining THz and MHz-GHz s…
FeCrS in magnetic fields: possible evidence for a multiferroic ground state
J. Bertinshaw, C. Ulrich, A. Günther +11
We report on neutron diffraction, thermal expansion, magnetostriction, dielectric, and specific heat measurements on polycrystalline FeCr2S4 in external magnetic fields. The ferrim…
Magnetic susceptibility, phonons and dielectric constant of single crystalline BiFeO3
Jun Lu, M Schmidt, P Lunkenheimer +4
The magnetic susceptibility between 1.5 and 800 K, the infrared reflectivity at room temperature and the temperature dependence of the dielectric constant at mm-wavelengths are rep…