Materials Data on Sr2HfO4 by Materials Project
Sr2HfO4 is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sr2+ is bonded in a 1-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.42–2.92 Å. Hf4+ is bonded to six O2- atoms to form corner-sharing HfO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.06 Å) and two longer (2.10 Å) Hf–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to five equivalent Sr2+ and one Hf4+ atom to form distorted OSr5Hf octahedra that share corners with seventeen OSr5Hf octahedra, edges with eight equivalent OSr5Hf octahedra, and faces with four equivalent OSr4Hf2 octahedra. The corner-sharing octahedra tilt angles range from 0–55°. In the second O2- site, O2- is bonded to four equivalent Sr2+ and two equivalent Hf4+ atoms to form distorted OSr4Hf2 octahedra that share corners with fourteen OSr5Hf octahedra, edges with two equivalent OSr4Hf2 octahedra, and faces with eight OSr5Hf octahedra. The corner-sharing octahedra tilt angles range from 0–55°.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Contributing Organization:
- MIT; UC Berkeley; Duke; U Louvain
- DOE Contract Number:
- AC02-05CH11231; EDCBEE
- OSTI ID:
- 1298353
- Report Number(s):
- mp-768305
- Resource Relation:
- Related Information: https://materialsproject.org/citing
- Country of Publication:
- United States
- Language:
- English
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