منابع مشابه
Equilibrium p-T Phase Diagram of Boron: Experimental Study and Thermodynamic Analysis
Solid-state phase transformations and melting of high-purity crystalline boron have been in situ and ex situ studied at pressures to 20 GPa in the 1500-2500 K temperature range where diffusion processes become fast and lead to formation of thermodynamically stable phases. The equilibrium phase diagram of boron has been constructed based on thermodynamic analysis of experimental and literature d...
متن کاملCalculation of the P-T phase diagram and tendency toward decomposition in equiatomic TiZr alloy.
Electronic, structural and thermodynamic properties of the equiatomic alloy TiZr are calculated within the electron density functional theory and the Debye-Grüneisen model. The calculated values of the lattice parameters a and c/a agree well with the experimental data for the α, ω and β phases. The ω phase is shown to be stable at atmospheric pressure and low temperatures; it remains energetica...
متن کاملNEUTRON DIFFRACTION STUDY OF THE p–T PHASE DIAGRAM FOR ERBIUM
Electrical resistivity measurements performed on a single crystal of erbium as a function of temperature and hydrostatic pressure have provided a preliminary p–T phase diagram. The results have been interpreted in terms of a model for the magnetic structures of Er deduced from neutron diffraction studies at ambient pressure. This model predicted the existence of a magnetic structure with a wave...
متن کاملPhase Diagram of the 1D t-J Model
We study the ground state properties of the one-dimensional t-J model using the Density Matrix Renormalization Group (DMRG), obtaining its phase diagram. By measuring the energy and correlations functions we have identified four different phases: metal, spin-gap with singlet superconductivity, superconductivity without spin-gap, and phase separation. We found at low densities that the phase sep...
متن کاملPhase diagram of the one-dimensional t-J model.
We present an analytic study of the phase diagram of the one-dimensional t − J model and a couple of its cousins. To deal with the interactions induced by the no double occupancy constraints, we introduce a deformation of the Hubbard operators. When the deformation parameter ∆ is small, the induced interactions are softened, accessible by perturbation theory. We combine bososnization with renor...
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ژورنال
عنوان ژورنال: Crystals
سال: 2018
ISSN: 2073-4352
DOI: 10.3390/cryst8050184