Results 111 to 120 of about 16,901 (160)

Phase separation in fcc structures

Phase Transitions, 1982
Abstract The phase diagram of segregating binary alloys with face-centered-cubic structure is calculated in the tetrahedron approximation of the cluster variation method. The calculation is based on a model consisting of pairwise interactions between nearest-neighbor atoms only.
M. Rodríguez-Rodrïguez   +1 more
openaire   +1 more source

Symmetry change at the fcc–distorted-fcc phase transition of lanthanides under pressure

Physical Review B, 1994
The crystal structure of the distorted-fcc high-pressure phase of the rare-earth elements is discussed in connection with the Landau theory of phase transition. From x-ray-diffraction spectra the irreducible representation ${\mathit{E}}_{\mathit{u}}^{\mathit{L}}$ is found to drive the (almost) continuous transition fcc\ensuremath{\rightarrow}distorted ...
, Porsch, , Holzapfel
openaire   +2 more sources

Lattice dynamics of the metastable fcc phase of lanthanum

Physical Review B, 1985
A single crystal of the metastable fcc phase of La was grown of sufficient volume for the study of the lattice dynamics of this phase by coherent inelastic-neutron-scattering techniques. The phonon dispersion curves have been measured along the (xi00), (xixi0), (xixixi), and (0xi1) symmetry directions at room temperature and at 10 K.
, Stassis   +4 more
openaire   +2 more sources

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