Browsing First Principles Phase Stability (FPPS) Files by Title
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First principles phase diagram calculations for the wurtzitestructure systems AlNGaN, GaNInN, and AlNInN
(20141120)First principles phase diagram calculations were performed for the wurtzitestructure quasibinary systems AlN–GaN, GaN–InN, and AlN–InN. Cluster expansion Hamiltonians that excluded, and included, excess vibrational ... 
GeTePbTe PbSPbTe PbSePbS PbTePbSe PbTeSnTe SnTeGeTe mixing and coherency strain energies
(20121015)Nanostructures formed by phase separation improve the thermoelectric figure of merit in lead chalcogenide semiconductor alloys, with coherent nanostructures giving larger improvements than incoherent nanostructures. However, ... 
HfOx First principles phase diagram calculations for the octahedralinterstitial system
(20130403)The group IV hexagonal closest packed (hcp) suboxides MOX (M = Ti, Zr or Hf) all exhibit octahedral interstitial ordering of oxygen, O, and vacancies, in solid solutions of the form View the MathML source, 0≤X≤1/2. By far, ... 
LiNiMnCoTiO Voltage Profile
(20140811)The performance enhancements associated with Ti substitution of Co in the layered cathode material Li1(NixMnxCo12x)O2 were investigated using density functional theory calculations. Examining the structural and electronic ... 
MoS2MoTe2
A first principles phase diagram calculation, that included van der Waals interactions, was performed for the system (1X)$\cdot$MoS$_{2}$(X)$\cdot$MoTe$_{2}$. Surprisingly, the predicted phase diagram has at least ... 
NaClKCl
First principles phase diagram calculations were performed for the system NaClKCl. Planewave pseudopotential calculations of formation energies were used as a basis for fitting cluster expansion Hamiltonians, both with ... 
NaCl–KCl: The role of excess vibrational entropy
(20130408)First principles phase diagram calculations were performed for the system NaCl–KCl. Planewave pseudopotential calculations of formation energies were used as a basis for fitting cluster expansion Hamiltonians, both with ... 
NaNbO3–KNbO3: Can spinodal decomposition generate relaxor ferroelectricity?
(20130408)First principles based phase diagram calculations were performed for the system (1−X) NaNbO3–(X) KNbO3. Plane wave pseudopotential calculations of formation energies were used as a basis for fitting a cluster expansion ... 
Np incorporation into metal organic frameworks
(20140811) 
PbTiO3: Dipole moment of a PbO vacancy pair
(20130408)The polarization of a nearestneighbor (nn) PbO vacancy pair [(VPbVO)nn] in PbTiO3 is calculated, using the modern theory of polarization, implemented in the densityfunctionaltheory ultrasoft pseudopotential formalism. ... 
SiCAlN, SiCGaN and SiCInN: wurtzitestructure quasibinary systems
(20130408)The clusterexpansion method was used to perform first principles phase diagram calculations for the wurtzitestructure quasibinary systems (SiC)1X(AlN)X, (SiC)1X (GaN)X and (SiC)1X(InN)X; and to model variations of ... 
Ta Melting Point Calculation by Smallcell Coexistence Method
(20140816)We calculate the melting temperature of Tantalum, by employing the smallsize coexistence solidliquid coexistence method. Two pseudopotentials are employed, namely Ta_v (5d^3 6s^2) and Ta_pv (5p^6 5d^3 6s^2). Results ... 
TiOM interaction between oxygen and metal (M) substitution in titanium for oxygen diffusion change
(20130528)We calculate firstprinciples interaction energies between substitutional solutes and oxygen interstitials in αtitanium and predict the effect of solutes on oxygen diffusion from those interactions. Interaction between ... 
TiX (X=Al, V, Nb, Ta, Mo, Zr, and Sn) impurity diffusion coefficients from firstprinciples calculations
Knowledge of diffusivity is fundamental to our understanding of diffusion mechanism and design of materials. Despite various elements dissolved in industrial Ti alloys to improve their performance, diffusion coefficients ... 
TiO2: On the possibility of ferromagnetism
(20130408)To see if ferromagnetism can occur in Cdoped anatase TiO2, we performed firstprinciples calculations for a number of Cdoped structures in which C atoms substitute O atoms. Our study shows that each C has spinpolarized ... 
TiO_X
(20140929)First principles based phase diagram calculations were performed for the hexagonal closest packed octahedralinterstitial solid solution system aTiOX, or aTi½ 1 XOX ([ ]¼Vacancy; 0rXr1=2), by the cluster expansion (CE) ... 
ZrOX
(20130408) 
ZrSiO4HfSiO4
(20130509)ZrSiO4 and HfSiO4 are of considerable interest because of their low thermal expansions, thermal conductivities, and the optical properties of HfSiO4. In addition, silicate phases of both are studied as model radioactive ...