Results 11 to 20 of about 16,901 (160)
Phase formation kinetics of metastable fcc cobalt
Materials & DesignThe kinetics for phase formation of metastable face-centered cubic (fcc) cobalt is explored using a combination of epitaxial thin film deposition and first-principles calculations.
Anshuman Thakral +3 more
doaj +3 more sources
Stability of the fcc phase in shocked nickel up to 332 GPa. [PDF]
Nat CommunAbstract Despite making up 5–20 wt.% of Earth's predominantly iron core, the melting properties of elemental nickel at core conditions remain poorly understood, due largely to a dearth of experimental data. We present an in situ X-ray diffraction study performed on laser shock-compressed samples of bulk nickel, reaching pressures up to ~500 GPa.
Pereira KA +19 more
europepmc +5 more sources
Phase-field-crystal model for fcc ordering [PDF]
Physical Review E, 2010 We develop and analyze a two-mode phase-field-crystal model to describe fcc ordering. The model is formulated by coupling two different sets of crystal density waves corresponding to <111> and <200> reciprocal lattice vectors, which are chosen to form triads so as to produce a simple free- energy landscape with coexistence of crystal and ...
Wu, Kuo-An, Adland, Ari, Karma, Alain
openaire +3 more sources
Phonon instabilities in high-pressure bcc-fcc and the isostructural fcc-fcc phase transitions of Cs [PDF]
Physical Review B, 2000 The phonon instabilities of cesium related to its pressure-induced $\mathrm{bcc}\ensuremath{-}\mathrm{to}\ensuremath{-}{\mathrm{fcc}}^{(1)}\ensuremath{-}\mathrm{to}\ensuremath{-}{\mathrm{fcc}}^{(2)}$ phase transitions are studied using the density-functional perturbation theory.
Xie, J. +6 more
openaire +2 more sources
Mechanism of the fcc-to-hcp phase transformation in solid Ar [PDF]
The Journal of Chemical Physics, 2017 We present an atomistic description of the fcc-to-hcp transformation mechanism in solid argon (Ar) obtained from transition path sampling molecular dynamics simulation. The phase transition pathways collected during the sampling for an 8000-particle system reveal three transition types according to the lattice deformation and relaxation details. In all
Bingxi Li +4 more
openaire +5 more sources
AIP Advances, 2023 Much is unknown about how phase transitions link to micro-/nano-structures in high-entropy systems, especially under extreme pressure and temperature conditions.
Andrew D. Pope +7 more
doaj +1 more source
The distorted-fcc phase of samarium
Journal of Physics: Conference Series, 2014 Angle-dispersive x-ray powder diffraction experiments were performed on samarium metal up to 50 GPa. We report that the high-pressure distorted-fcc phase has the same hR24 structure observed in praseodymium, but, unlike praseodymium, samarium does not undergo a transition to a second distorted-fcc phase.
Husband, Rachel +3 more
openaire +3 more sources
Kinetics of the allotropic hcp–fcc phase transformation in cobalt [PDF]
Philosophical Magazine, 2011 The allotropic, martensitic phase transformation (hcp → fcc) in cobalt was investigated by differential scanning calorimetry (DSC) upon isochronal annealing at heating rates in the range from 10 K min−1 to 40 K min−1. The microstructural evolution was traced by optical microscopy and X-ray diffractometry.
Bauer, R. +3 more
openaire +2 more sources
Magnetic and structural characteristics of ambient pressure fcc phase Ho and Tb thin films
Materials Research Express, 2021 We report the results of an investigation into the structural and magnetic properties of thin films of Ho and Tb sputtered on Ta-buffered Si substrates.
T Butler, R G Buckley, S Granville
doaj +1 more source
Journal of Materials Research and Technology, 2021 The phase transformation behavior from metastable bcc-δ to fcc-γ in Fe–Mn–Si based shape memory alloy processed by laser powder bed fusion was investigated. Primary δ phase formed in this alloy due to the rapid cooling and fast solidification.
Dohyung Kim +4 more
doaj +1 more source