Materials Data on La5Si4 by Materials Project

Dataset · Sat May 02 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1193069· OSTI ID:1193069

La5Si4 crystallizes in the tetragonal P4_12_12 space group. The structure is three-dimensional. there are three inequivalent La sites. In the first La site, La is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of La–Si bond distances ranging from 3.04–3.19 Å. In the second La site, La is bonded to six Si atoms to form a mixture of distorted edge, corner, and face-sharing LaSi6 octahedra. The corner-sharing octahedra tilt angles range from 40–49°. There are a spread of La–Si bond distances ranging from 3.20–3.41 Å. In the third La site, La is bonded to six Si atoms to form a mixture of corner and face-sharing LaSi6 octahedra. The corner-sharing octahedra tilt angles range from 42–57°. There are four shorter (3.20 Å) and two longer (3.25 Å) La–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to eight La and one Si atom. The Si–Si bond length is 2.46 Å. In the second Si site, Si is bonded in a 8-coordinate geometry to seven La and one Si atom.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1193069
• Report Number(s): mp-18345
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
La-Si
La5Si4
crystal structure