Publications by authors named "Stefan Holenstein"
[Na(HO)][FeSe] was synthesized using hydrothermal methods and characterized by single-crystal X-ray diffraction, Fe Mössbauer spectroscopy, magnetization, and muon spin resonance (μSR) measurements. The cubic crystal structure (space group 23, = 11.785 Å, = 2) contains heterocubane-type clusters with symmetry.
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- Two-dimensional magnetic systems with continuous spin are complex due to the interplay of fluctuations and correlations, especially when anisotropic dipolar interactions are involved.
- Researchers have successfully created XY spin systems using nanoscale magnetic discs on square lattices, allowing for the study of their thermal behaviors.
- Experiments reveal evidence of correlated dynamics at a critical temperature and the development of long-range order at lower temperatures, aligning with theoretical models of dipolar-coupled systems and highlighting the potential to manipulate their magnetic properties.
The rare-earth chromium(II) oxyselenides RECrSeO (RE = La-Nd) were synthesized in eutectic NaI/KI fluxes, and their crystal structures were determined by single-crystal and powder X-ray diffraction (PbHgClO-type, C2/m, Z = 2). The magnetic structure of LaCrSeO was solved and refined from neutron powder diffraction data. Main building blocks are chains of edge-sharing CrSeO octahedra linked together by two edge-sharing ORECr tetrahedra forming infinite ribbons.
View Article and Find Full Text PDFBackground: About one-third of people older than 65 years fall at least once a year. Physical exercise has been previously demonstrated to improve gait, enhance physical fitness, and prevent falls. Nonetheless, the addition of cognitive training components may potentially increase these effects, since cognitive impairment is related to gait irregularities and fall risk.
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