title: First-principles study of electronic structures and stability of body-centered cubic Ti-Mo alloys by special quasirandom structures.
abstract: The electronic structures and structural properties of body-centered cubic Ti-Mo alloys were studied by first-principles calculations. The special quasirandom structures (SQS) model was adopted to emulate the solid solution state of the alloys. The valence band electronic structures of Ti-Mo and Ti-Mo-Fe alloys were measured by hard x-ray photoelectron spectroscopy. The structural parameters and valence band photoelectron spectra were calculated using first-principles calculations. The results obtained with the SQS models showed better agreement with the experimental results than those obtained using the conventional ordered structure models. This indicates that the SQS model is effective for predicting the various properties of solid solution alloys by means of first-principles calculations.
authors.affiliation: National Institute for Materials Science (NIMS) 1-2-1 Sengen, Tsukuba 305-0047, Japan.
authors.forename: Ryoji
authors.initials: R
authors.lastname: Sahara
authors.affiliation: National Institute for Materials Science (NIMS) 1-2-1 Sengen, Tsukuba 305-0047, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Emura
authors.affiliation: National Institute for Materials Science (NIMS) 1-2-1 Sengen, Tsukuba 305-0047, Japan.
authors.forename: Seiichiro
authors.initials: S
authors.lastname: Ii
authors.affiliation: Scynchrotron X-ray Station at SPring-8, National Institute for Materials Science (NIMS), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan.
authors.forename: Shigenori
authors.initials: S
authors.lastname: Ueda
authors.affiliation: National Institute for Materials Science (NIMS) 1-2-1 Sengen, Tsukuba 305-0047, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Tsuchiya
keywords: first-principles calculation; hard x-ray photoelectron spectroscopy; solid solution system; special quasirandom structures; β Ti–Mo alloy