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Results for “PHASE STABILITY”
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Carrier-envelope-phase stabilized terawatt class laser at 1 kHz with a wavelength tunable option
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Expanded Phase Stability of Gd-Based Garnet Transparent Ceramic Scintillators
Abstract not provided
First principles analysis of lattice dynamics for Fe-based superconductors and entropically-stabilized phases
Modern calculations are becoming an essential, complementary tool to inelastic x-ray scattering studies, where x-rays are scattered inelastically to resolve meV phonons. Calculations of the inelastic structure factor for any value of Q assist in both planning the experiment and analyzing the results. Moreover, differences between the measured data and theoretical calculations help identify important new physics driving the properties of novel correlated systems. We have used such calculations to better and more e ciently measure the phonon dispersion and elastic constants of several iron pnictide superconductors. This dissertation describes calculations and measurements at room temperature in the tetragonal phase of CaFe{sub 2}As{sub 2} and LaFeAsO. In both cases, spin-polarized calculations imposing the antiferromagnetic order present in the low-temperature orthorhombic phase dramatically improves the agreement between theory and experiment. This is discussed in terms of the strong antiferromagnetic correlations that are known to persist in the tetragonal phase. In addition, we discuss a relatively new approach called self-consistent ab initio lattice dynamics (SCAILD), which goes beyond the harmonic approximation to include phonon-phonon interactions and produce a temperature-dependent phonon dispersion. We used this technique to study the HCP to BCC transition in beryllium.
First Principles Studies of Phase Stability and Reaction Dynamics in Complex Metal Hydrides
Complex metal hydrides are believed to be one of the most promising materials for developing hydrogen storage systems that can operate under desirable conditions. At the same time, these are also a class of materials that exhibit intriguing properties. We have used state-of-the-art computational techniques to study the fundamental properties of these materials.
Electronic structure and phase stability of strongly correlated electron materials
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Phase stability, mechanical shock, and high temperature properties of select compositionally complex oxides
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Predicting Phase Stability of Compositionally Complex 5RE2Zr2O7 Type Rare Earth Zirconates
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Understanding Phase Stability of Metallic 1T-MoS2 Anodes for Sodium-Ion Batteries
We discuss metallic 1T-MoS2 as an anode material for sodium-ion batteries (SIBs). In situ Raman is used to investigate the stability of metallic MoS2 during the charging and discharging processes. Parallel first-principles computations are used to gain insight into the experimental observations, including the measured conductivities and the high capacity of the anode.
Phase stability and cation partitioning in compositionally complex rare earth aluminates and aluminate‐zirconate mixtures
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Study of short term phase stability Interim report, Mar. 17 - Sep. 5, 1965
Frequency conversion theory with charge-storage diode, using Fourier harmonic analysis
Study of short term phase stability. An experimental coherent fractional frequency multiplier for S-band
Development of coherent fractional frequency multiplier for S-band
Study of short-term phase stability Final report, Sep. 6, 1965 - Sep. 17, 1966
Modes of subharmonic generator employing charge storage diodes
Study of short term phase stability Interim report, 16 Mar. 1964 - 16 Mar. 1965
Parametric amplifiers and tunnel diodes as L-band and S-band down-converters - frequency division multiplexing
Apparatus for phase stability determination Patent
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Phase stability and mechanical properties of carbide and boride strengthened chromium-base alloys.
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Chopper-stabilized phase detector
Phase-detector circuit for binary-tracking loops and other binary-data acquisition systems minimizes effects of drift, gain imbalance, and voltage offset in detector circuitry. Input signal passes simultaneously through two channels where it is mixed with early and late codes that are alternately switched between channels. Code switching is synchronized with polarity switching of detector output of each channel so that each channel uses each detector for half time. Net result is that dc offset errors are canceled, and effect of gain imbalance is simply change in sensitivity.