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Estimated D$sub 2$-DT-T$sub 2$ phase diagram in the three-phase region

Description: A composite of experimental eH$sub 2$-D$sub 2$ phase-diagram data at the three-phase line is assembled from the literature. The phase diagram is a smooth cigar shape without a eutectic point, indicating complete miscibility of liquid and solid phases. Additional data are used to estimate the D$sub 2$-T$sub 2$, D$sub 2$-DT, and DT-T$sub 2$ binary phase diagrams. These are assembled into the ternary D$sub 2$-DT-T$sub 2$ phase diagram. A surface representing the chemical equilibrium of the three s… more
Date: August 26, 1975
Creator: Souers, P. C.; Hickman, R. G. & Tsugawa, R. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The ScCl3-Sc System

Description: Experimental data supporting lower valence halides of scandium were not found in the literature. Our investigation was of the phase diagram of the ScCl3-Sc system, and also the vapor pressure-composition isotherm (at 960 degree) for this system. Investigation of the ScCl3-Sc system presented particular difficulties in comparison with analogous systems for rare earth elements in that ScCl3 is highly volatile (boiling pt. = 967 degree); according to our data the vapor pressure is 512 mm Hg measur… more
Date: April 1964
Creator: Polyachenok, O. G. & Novikov, G. I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Theorectical Treatment of Atomic Configurations Found in Some Iron-Aluminum Solid Solutions

Description: "Theoretical calculations have been carried our for the two ordering phases which occur in the FeAl system. The statistical treatment involves first and second neighbor interaction parameters as well as a magnetic interaction between first neighbor iron atoms. The phase diagram and the amount and type of long range order for slowly cooled alloys are calculated. Further calculations include short range order for the disordered phase at three compositions and two temperatures. As expected, the… more
Date: July 12, 1962
Creator: Houska, C. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magnesium-Uranium Alloy System

Description: Analytical, x-ray, thermal, and metallographic data have been obtained in the study of the magnesium-uranium system, and a proposed phase diagram has been constructed.
Date: 1954
Creator: Tracy, George A.; Chiotti, P. & Wilhelm, Harley A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thorium-Molybdenum Phase Diagram

Description: From abstract: "The phase diagram of the thorium-molybdenum alloy system has been determined to be the eutectic type with a eutectoid reaction associated with the thorium alpha-beta transformation. X-ray, thermal, electrical resistance and metallographic methods have established the eutectic point at 1380 ± 10°C and 7.0 ± 0.5 wt % molybdenum. A eutectoid reaction is proposed at 1358 ± 5°C and less than 0.1 wt % molybdenum. No solubility of thorium in molybdenum was detected at 1325°C."
Date: March 27, 1962
Creator: McMasters, O. D.; Palmer, P. E. & Larsen, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effective determination of coexistence curves using reversible-scaling molecular dynamics simulations

Description: We present a simulation technique that allows the calculation of a phase coexistence curve from a single nonequilibrium molecular dynamics (MD) simulation. The approach is based on the simultaneous simulation of two coexisting phases, each in its own computational cell, and the integration of the relevant Clausius-Clapeyron equation starting from a known coexistence point. As an illustration of the effectiveness of our approach we apply the method to explore the melting curve in the Lennard-Jon… more
Date: December 18, 2000
Creator: de Koning, M; Antonelli, A & Yip, S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The f-spin physics of rare-earth iron pnictides: influence of d-electron antiferromagnetic order on heavy fermion phase diagram

Description: Some of the high {Tc} iron pnictides contain rare-earth elements, raising the question of how the existence and tunability of a d-electron antiferromagnetic order influences the heavy fermion behavior of the f-moments. With CeOFeP and CeOFeAs in mind as prototypes, we derive an extended Anderson lattice model appropriate for these quaternary systems. We show that the Kondo screening of the f-moments are efficiently suppressed by the d-electron ordering. We also argue that, inside the d-electron… more
Date: January 1, 2009
Creator: Zhu, Jian-xin; Dai, Jianhui & Si, Qimiao
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Grain Refinement Produced by an Alpha Phase Anneal of Beta Phase Heat Treated and Water Quenched Uranium

Description: During an experiment involving alpha phase annealing (at 610 to 655 deg C for 5 and 10 min) of beta-quenched uranium, it was determined that the relatively coarse, irregular shaped grains (0.08 to 0.150 mm in diameter) in the beta-quenched structure, were replaced by fine equiaxed grains (0.04 to 0.09 mm in diameter).
Date: January 3, 1955
Creator: Gradner, H.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of salt identity on the phase diagram for a globularprotein in aqueous electrolyte solution

Description: Monte Carlo simulations are used to establish the potential of mean force between two globular proteins in an aqueous electrolyte solution. This potential includes nonelectrostatic contributions arising from dispersion forces first, between the globular proteins, and second, between ions in solution and between each ion and the globular protein. These latter contributions are missing from standard models. The potential of mean force, obtained from simulation, is fitted to an analytic equation. … more
Date: February 22, 2006
Creator: Bostrom, Mathias; Tavares, Frederico W.; Ninham, Barry W. & Prausnitz, John M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hadronic Correlations and Fluctuations

Description: We will provide a review of some of the physics which can be addressed by studying fluctuations and correlations in heavy ion collisions. We will discuss Lattice QCD results on fluctuations and correlations and will put them into context with observables which have been measured in heavy-ion collisions. Special attention will be given to the QCD critical point and the first order co-existence region, and we will discuss how the measurement of fluctuations and correlations can help in an experim… more
Date: October 9, 2008
Creator: Koch, Volker
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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Density-functional calculations of a, b, g, d, dp, and e plutonium

Description: Total energies for the six known polymorphs of plutonium metal have been calculated within spin and orbital polarized density-functional theory as a function of lattice constant. Theoretical equilibrium volumes and bulk moduli correspond well with experimental data and the calculated total energies are consistent with the known phase diagram of Pu. It is shown that a preference for formation of magnetic moments, increasing through the {alpha} {yields} {beta} {yields} {gamma} phases, explain the… more
Date: October 22, 2003
Creator: Soderlind, P & Sadigh, B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Uranium-Rhenium Alloy System

Description: Abstract The phase diagram of the uranium-rhenium alloy system is presented along with a discussion on transformation kinetics of the uranium solid solutions. The phase diagram is of the double eutectic type with the intermediate phase having the composition URe2. This phase exhibits allotropy at 180°C and melts congruently at 2200°C. URe2 reacts sluggishly with the uranium solid solutions below 750°C to form the peritectoid compound U2Re. Eutectic reactions occur at 1105° and 2105°C at respec… more
Date: January 14, 1963
Creator: Jackson, R. J. (Robert James), 1929-; Williams, D. E. & Larsen, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nature of the Triple Point in Chromium Alloys: Mode-Softening of the Incommensurate Spin Density Wave

Description: The magnetic stiffness parameter, A2, associated with the critical fluctuations in the paramagnetic phase close to the incommensurate spin-density-wave (SDW) transition of a Cr+0.18at.%Re single crystal, when compared with that of in pure chromium and dilute alloys of vanadium in chromium, indicates that the singularity responsible for the onset of the commensurate SDW phase occurs when A2 approaches zero at a finite value of the incommensurability parameter, delta 0.017 rlu, instead of zero as… more
Date: December 31, 1997
Creator: Noakes, D.R.; Fawcett, E.; Sternlieb, B.L.; Shirane, G. & Jankowska, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hiding quiet solutions in random constraint satisfaction problems

Description: We study constraint satisfaction problems on the so-called planted random ensemble. We show that for a certain class of problems, e.g., graph coloring, many of the properties of the usual random ensemble are quantitatively identical in the planted random ensemble. We study the structural phase transitions and the easy-hard-easy pattern in the average computational complexity. We also discuss the finite temperature phase diagram, finding a close connection with the liquid-glass-solid phenomenolo… more
Date: January 1, 2008
Creator: Zdeborova, Lenka & Krzakala, Florent
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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