Publications database

The susceptibility of delayed hydride cracking (DHC) in the Zr-2.5%Nb alloy was evaluated in six microstructures produced from an extruded tube of Zr-2.5%Nb, which underwent different thermomechanical treatments, divided into two separate groups: Low temperature samples (LT) were heat-treated below the monotectoid temperature in the α-Zr + β-Nb field, and included pressure tube sample of CANDU-type material obtained through two different cold deformation methods, rolling and drawing, and stress-relieved at 400 °C for 24 h, and heat-treated samples at 600 °C/4 h. High-temperature samples (HT) were heat-treated in the β-Zr field at 900 °C/3 h, and two different cooling sequences up to room temperature.The increase in the ultimate tensile strength (UTS) and hardness due to metallurgical processing in LT materials made them more susceptible to DHC, reducing the stress intensity, KIH, from 11.8 to 8.5 MPa m0.5, together with an increase in crack propagation velocity from 1.6 10−8 to 4.5 10−8 m/s.In situ hydrogen diffusion experiments were performed at ANTARES, the cold neutron imaging facility at the FRM-2 reactor, on LT materials. [...]

Inspired by the Chinese wood oil coating on umbrella, an ionic polymer layer is coated onto hybrid hydrogels to realize monitoring of the solar ultraviolet (UV) radiation dose in aqueous environments. The hybrid hydrogels are synthesized by introducing the photocatalyst graphitic-carbon nitride (g-C3N4) nanosheets into the radically polymerized hydrogels from the monomer di(ethylene glycol) methyl ether methacrylate (MA) and oligo(ethylene glycol) methyl ether methacrylate (MA300). [...]

Polyelectrolytes (PE) are polymeric macromolecules in aqueous solutions characterized by their chain topology and intrinsic charge in a neutralizing fluid. Structure and dynamics are related to several characteristic screening length scales determined by electrostatic, excluded volume, and hydrodynamic interactions. [...]

Herein, a single-ion polymer electrolyte is reported for high-voltage and low-temperature lithium-metal batteries that enables suppressing the growth of dendrites, even at high current densities of 2 mA cm-2. The nanostructured electrolyte was introduced into the cell by mechanically processing the polymer powder via an easily scalable process. [...]

Polarized neutron reflectometry is used to study Dy/Gd superlattices with different ratios of Dy- and Gd-layer thicknesses: 1 : 1, 2 : 1, and 3 : 1. It is experimentally shown that the formation of helicoidal magnetic ordering in Dy layers with a period incommensurate with that of the superlattice manifests itself in the appearance of a magnetic-superlattice reflection, which is forbidden due to equality of the thicknesses of alternating Dy and Gd layers with a ratio of 1 : 1. [...]

Polarized neutron reflectometry is used to study Dy/Gd superlattices with different ratios of Dy- and Gd-layer thicknesses: 1 : 1, 2 : 1, and 3 : 1. It is experimentally shown that the formation of helicoidal magnetic ordering in Dy layers with a period incommensurate with that of the superlattice manifests itself in the appearance of a magnetic-superlattice reflection, which is forbidden due to equality of the thicknesses of alternating Dy and Gd layers with a ratio of 1 : 1. [...]

Topologically stable spin spiral structures in rare-earth (RE) can form the basis of realizing all-spin-based technology as strong exchange coupling has been reported earlier at the ferromagnet (FM)–RE or RE–RE interfaces around the temperature range where both layers are essentially ferromagnetic. Owing to the small number of irreversible spins in the non-collinear configuration within the RE layer, very weak coupling is rendered around the temperature range of the helical phase. [...]

The metallic compound Mn5Si3 hosts a series of antiferromagnetic phases that can be controlled by external stimuli, such as temperature and magnetic field. In this work, we investigate the spin-excitation spectrum of bulk Mn5Si3 by combining inelastic neutron scattering measurements and density functional theory calculations. [...]

The Daba Shan orocline is located at the northeastern margin of the Sichuan Basin and has been inferred as a foreland thrust-fold belt of the Qinling Orogen since the Late Triassic. A complete understanding of rock exhumation history is critical to elucidate how and when this typical orocline structure is developed. [...]