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2022-01-27
11:29

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2022-01-27
11:29
OpenAccess [FZJ-2021-05348] Journal Article
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Topological Analysis of the Experimental Electron Density in Multiferroic Antiferromagnet Ba2MnGe2O7
In the field of magnetoelectric coupling, especially via the spin dependent metal-ligand d-p hybridization mechanism found in multiferroic Ba2MGe2O7 (M = Mn, Co), a detailed knowledge of the microscopic structural parameters is essential, also for the theoretical modeling. In this article, we report a systematic structural study of Ba2MnGe2O7 single crystal under varying temperature between 110 to 673 K using non-destructive in-situ single crystal synchrotron radiation diffraction. [...]
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2022-01-27
11:29
OpenAccess [FZJ-2021-05347] Journal Article
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Magnetic order and sign of the Dzyaloshinskii-Moriya interaction in 2D antiferromagnet Ba2CoGe2O7 under applied magnetic field
The Dzyaloshinskii-Moriya interaction (DMI), that is the antisymmetric part of the exchange coupling tensor, favors the perpendicular arrangement of magnetic moment, thus, induces canting in otherwise collinear structures. The DMI is the prerequisite for the emergence of weak ferromagnetism in antiferromagnets, but can stabilize twisted magnetic textures, such as spin spirals, soliton lattices and magnetic skyrmions. [...]
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2022-01-27
11:29
Embargoed OpenAccess [FZJ-2020-04503] Journal Article
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Shear Flow Behavior of Bidisperse Rodlike Colloids
Macromolecules 53(7), 2662-2668 () [10.1021/acs.macromol.9b02239]
A priori prediction of the flow properties ofpolydisperse rodlike macromolecules is a prerequisite for theunderstanding of many industrial and biological processes. Usingmixtures of two naturally monodisperse viruses, we create abenchmark bidisperse suspension of rodlike colloids to test theeffect of length bidispersity on the shear flow behavior. [...]

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2022-01-25
14:57
[IMPULSE-2022-00050] Journal Article
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Si/Cu/C Nanohybrid Lithium-Ion Battery Anode with in Situ Incorporation of Nonagglomerated Super-Small Copper Nanoparticles Based on Epoxy Resin
Energy & fuels 35(7), 6250 - 6264 () [10.1021/acs.energyfuels.0c04272]
Silicon anode has a huge potential to replace graphite anode. Nevertheless, it shows poor long-term cyclic stability and rate capability due to a huge volume change upon lithiation and intrinsic semiconductor property. [...]
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2022-01-25
11:28

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2022-01-25
11:28
OpenAccess [FZJ-2021-01219] Journal Article
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Direct evidence for anisotropic three-dimensional magnetic excitations in a hole-doped antiferromagnet
We report a neutron scattering study on Pr2−xSrxNiO4 (x ≈ 0.5) with magnetic incommensu- rability ε = 0.461 at 10 K, showing direct evidence for out-of-plane magnetic excitations caused by a non-negligible inter-layer spin coupling (J⊥). The magnetic spectrum is fully represented by linear spin wave theory considering an unconventional body-centered like stacking of discommen- surated spin stripes. [...]
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2022-01-23
11:28

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2022-01-23
11:28
OpenAccess [FZJ-2022-00790] Journal Article
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A temperature-controlled electric field sample environment for small-angle neutron scattering experiments
A new sample environment is introduced for the study of soft matter samples in electric fields using small-angle neutron scattering instruments. The sample environment is temperature controlled and features external electrodes, allowing standard quartz cuvettes to be used and conducting samples or samples containing ions to be investigated without the risk of electrochemical reactions occurring at the electrodes. [...]
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2022-01-23
11:28

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