Materials Data on Yb4SmS5 by Materials Project

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

DOI:https://doi.org/10.17188/1745972· OSTI ID:1745972

Yb4SmS5 is Caswellsilverite-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Yb2+ sites. In the first Yb2+ site, Yb2+ is bonded to six S2- atoms to form YbS6 octahedra that share corners with six YbS6 octahedra, edges with four equivalent SmS6 octahedra, and edges with eight YbS6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are five shorter (2.82 Å) and one longer (2.86 Å) Yb–S bond lengths. In the second Yb2+ site, Yb2+ is bonded to six S2- atoms to form YbS6 octahedra that share a cornercorner with one SmS6 octahedra, corners with five YbS6 octahedra, and edges with twelve YbS6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are four shorter (2.82 Å) and two longer (2.84 Å) Yb–S bond lengths. Sm2+ is bonded to six S2- atoms to form SmS6 octahedra that share corners with two equivalent YbS6 octahedra, corners with four equivalent SmS6 octahedra, edges with four equivalent SmS6 octahedra, and edges with eight equivalent YbS6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.82 Å) and two longer (2.85 Å) Sm–S bond lengths. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded to five Yb2+ and one Sm2+ atom to form a mixture of edge and corner-sharing SYb5Sm octahedra. The corner-sharing octahedral tilt angles are 0°. In the second S2- site, S2- is bonded to two equivalent Yb2+ and four equivalent Sm2+ atoms to form SYb2Sm4 octahedra that share corners with six SYb2Sm4 octahedra and edges with twelve SYb5Sm octahedra. The corner-sharing octahedral tilt angles are 0°. In the third S2- site, S2- is bonded to six Yb2+ atoms to form a mixture of edge and corner-sharing SYb6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. In the fourth S2- site, S2- is bonded to six Yb2+ atoms to form a mixture of edge and corner-sharing SYb6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. The S–Yb bond length is 2.82 Å.

• 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: 1745972
• Report Number(s): mp-1215492
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
S-Sm-Yb
Yb4SmS5
crystal structure