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2025-06-19
14:28
[IMPULSE-2025-00103] Journal Article
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Anisotropy driven spin–reorientation, and two–step magnetic ordering in cubic semiconducting spinel Cr 0.1 Mn 0.9 Fe 0.2 Co 1.8 O 4
The nature of magnetism in the cubic spinel Cr0.1Mn0.9Fe0.2Co1.8O4 is reported based onsystematic investigations by means of magnetization (M), ac susceptibility (χ) and heat capacity(CP) measurements, as well as by neutron diffraction. Structural characterization of the samplewas done using x-ray absorption spectroscopy, neutron and synchrotron diffraction. [...]
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2025-06-18
10:40

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2025-06-16
14:01
DBCoverage [IMPULSE-2025-00100] Journal Article
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Large field-of-view event-mode camera for high-precision epithermal neutron resonance imaging
A large-area event-mode camera system coupled with a LiF-ZnS:Ag scintillator is applied for neutron resonance imaging (NRI) on the energy-resolved neutron imaging (ERNI) flight path, also known as Flight Path 5 (FP5), at the Los Alamos Neutron Science Center (LANSCE). This novel neutron imaging system, featuring a 120120 mm field of view, efficiently captures resonance information across the entire image in a single acquisition, significantly reducing beam time requirements compared to conventional energy-resolved neutron imaging systems. [...]

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2025-06-16
13:48
DBCoverage [IMPULSE-2025-00099] Journal Article
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Energy-resolved neutron imaging and diffraction including grain orientation mapping using event camera technology
Time-of-flight neutron diffraction and energy-resolved imaging each provide unique perspectives into material properties. Neutron diffraction is useful for assessing microstructural parameters such as phase composition, texture, and dislocation densities, though it typically provides averaged data over the sampled volume. [...]

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2025-06-16
09:25

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2025-06-16
09:20
[IMPULSE-2025-00097] Journal Article
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Structural response of silicon-containing graphite anodes on lithium intercalation
This study investigates the impact of silicon content in the graphite anode of cylinder-type Li-ion batteries using operando neutron powder diffraction techniques. A batch of four different Li-ion cells is analyzed, with a focus on the structural response of active cell components during electrochemical cycling. [...]
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2025-06-16
09:17
[IMPULSE-2025-00096] Journal Article
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A low-cost and high-energy aqueous potassium-ion battery
o address challenges related to the intermittency of renewable energy sources, aqueous potassium-ion batteries (AKIBs) are a promising and sustainable alternative to conventional systems for large-scale energy storage. To enable their practical application, maximizing energy density and longevity while minimizing production and material costs is a key goal. [...]
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2025-06-16
09:07
[IMPULSE-2025-00094] Journal Article
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Short-Range Structural Correlations and Property Anomalies in Non-MPB Compositions of the Pb-Free Piezoelectric Na 0.5 Bi 0.5 TiO 3 -K 0.5 Bi 0.5 TiO 3
Among Pb-free piezoelectrics, Na0.5Bi0.5TiO3 (NBT)-based ferroelectric systems have a unique distinction of offering a complex interplay of ferroelectric and nonferroelectric (in-phase octahedral tilt) structural instabilities, influencing its ferroelectric, dielectric, and electromechanical behavior. The morphotropic phase boundary (MPB) system like (1 – x)Na0.5Bi0.5TiO3-xK0.5Bi0.5TiO3 (NBT-KBT) is where this complexity plays out in full measure. [...]
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2025-06-16
09:04
[IMPULSE-2025-00093] Journal Article
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Metallization without Charge Transfer in CuReO 4 Perrhenate under Pressure
Inorganic chemistry 64(12), 6010 - 6022 () [10.1021/acs.inorgchem.4c05051]
Using high-pressure synchrotron X-ray diffraction combined with Raman spectroscopy and density-functional calculations, we determined the sequence of the pressure-induced transformations in CuReO4. At 1.5 GPa, the lattice symmetry changes from I41cd to I41/a with the transformation of isolated ReO4-tetrahedra into infinite chains of ReO6-octahedra. [...]
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2025-06-16
08:59
[IMPULSE-2025-00092] Journal Article
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Fast Sodium Ion Conductivity in Pristine Na 8 SnP 4 : Synthesis, Structure and Properties of the Two Polymorphs LT‐Na 8 SnP 4 and HT‐Na 8 SnP 4
Achieving high ionic conductivities in solid state electrolytes is crucial for the development of efficient all-solid-state-batteries. Considering future availability and sustainability, sodium materials hold promises for an alternative for lithium materials in all-solid-state batteries, due to the higher abundance. [...]
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