208 citations · 2.7k across the 58 of their papers we have counts for
9 papers · 1 filter
Competition of magnetism and superconductivity in underdoped (Ba1-xKx)Fe2As2
Marianne Rotter, Marcus Tegel, Inga Schellenberg +7
Polycrystalline samples of underdoped (Ba1-xKx)Fe2As2 (x<=0.4) were synthesized and studied by x-ray powder diffraction, magnetic susceptibility, specific heat and 57Fe-Moessbauer-…
Colossal dielectric constant up to GHz at room temperature
S. Krohns, P. Lunkenheimer, Ch. Kant +5
The search for new materials with extremely high ("colossal") dielectric constants, required for future electronics, is one of the most active fields of modern materials science. H…
Spin-driven Phase Transitions in ZnCrSe and ZnCrS Probed by High Resolution Synchrotron X-ray and Neutron Powder Diffraction
F. Yokaichiya, A. Krimmel, V. Tsurkan +7
The crystal and magnetic structures of the spinel compounds ZnCrS and ZnCrSe were investigated by high resolution powder synchrotron and neutron diffraction. ZnCr$_…
Colossal magnetocapacitive effect in differently synthesized and doped CdCr2S4
S. Krohns, F. Schrettle, P. Lunkenheimer +2
In the present work, we address the question of an impurity-related origin of the colossal magnetocapacitive effect in the spinel system CdCr2S4. We demonstrate that a strong varia…
Electron Spin Resonance across the Charge-ordering Transition in YBaMn2O6
D. Zakharov, J. Deisenhofer, H. -A. Krug von Nidda +3
We investigated the metal-ordered manganite system YBaMn2O6 using electron spin resonance (ESR) in the paramagnetic regime across the charge-ordering and structural phase transitio…
Optical Spectroscopy in CoO: Phonons, Electric, and Magnetic Excitations
Ch. Kant, T. Rudolf, F. Schrettle +5
The reflectivity of single-crystalline CoO has been studied by optical spectroscopy for wave numbers ranging from 100 to 28,000\wn and for temperatures 8 325 K\@. A splitti…