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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Monte Carlo simulation of magnetic domain structure and magnetic properties near the morphotropic phase boundary
The magnetization properties changing with the anisotropy energy barrier (a) and temperature (b) under a constant field.
Conformational changes in the di-domain structure of Arabidopsis phosphoethanolamine methyltransferase leads to active-site formation
Abstract not provided
Raman Vibrations, Domain Structures, and Photovoltaic Effects in A‐Site La‐Modified BiFeO 3 Multiferroic Ceramics
Micro‐Raman spectroscopy, X‐ray diffraction, high‐resolution transmission electron microscopy ( TEM ), oxygen vacancies, synchrotron X‐ray absorption spectroscopy, magnetizations, optical band gaps, and photovoltaic ( PV ) effects have been studied in (Bi 1− x La x )FeO 3 ( BFO 100 x L) ceramics for x = 0.0, 0.05, 0.10, and 0.15. XRD , Raman spectra, and TEM confirm a rhombohedral R 3 c symmetry with the tilted FeO 6 oxygen octahedra in all compounds. The low‐frequency Raman vibrations become broader and shift toward higher frequency as La 3+ increases. Fe K‐edge synchrotron X‐ray absorptions reveal that Fe 3+ valence and Fe–O–Fe bond angle are not modified by the La 3+ substitution. All compounds exhibit a linear antiferromagnetic feature. Optical transmission reveals band gaps in the range of 2.22–2.24 eV. The heterostructures of indium tin oxide ( ITO ) film/(Bi 1− x La x )FeO 3 ceramics/Au film show a p – n junction‐like I – V characteristic behavior. The maximal PV power conversion efficiency can reach 0.19% in ITO / BFO 15L/Au under illumination of λ = 405 nm. A junction‐like theoretical model can reasonably describe open‐circuit voltage and short‐circuit current as a function of illumination intensity.
An Optimal Sensor Placement Approach for Damage Detection Under Frequency-Domain Structural Dynamics.
Abstract not provided.
Streamer‐Like Red Line Diffuse Auroras Driven by Time Domain Structures Associated With Electron Injection and Braking Ion Flows
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Magnetosphere‐Ionosphere Coupling of Precipitated Electrons in Diffuse Aurora Driven by Time Domain Structures
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Domain structure of thin ferromagnetic films domennaya struktura tonkikh ferromagnitnykh plenok
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Clinopyroxenes from Apollo 12 and 14 - Exsolution, domain structure, and cation order.
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A Scanning Electron Microscope /SEM/ study of the magnetic domain structure of iron meteorites and their synthetic analogues
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Grand unification and possible matter-antimatter domain structure in the Universe
(Previously announced in STAR as N81-23986)
Red Line Diffuse‐Like Aurora Driven by Time Domain Structures Associated With Braking Magnetotail Flow Bursts
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Probing the Hydrophilic Domain Structure and Water Transport in SDAPP Proton Exchange Membranes.
Abstract not provided.
NMR Techniques to Measure Hydrophilic Domain Structure and Water Transport in Polymer Exchange Membranes.
Abstract not provided.
Molecular Level Details of Dynamics Domain Structure and Transport in Polymers using NMR Spectroscopy.
Abstract not provided.