Materials Data on BaYMn2O5 by Materials Project

Dataset · Sun Apr 26 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1726675· OSTI ID:1726675

YBaMn2O5 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Ba2+ is bonded to twelve O2- atoms to form distorted BaO12 cuboctahedra that share corners with four equivalent BaO12 cuboctahedra, faces with four equivalent BaO12 cuboctahedra, faces with four equivalent MnO5 square pyramids, and faces with four equivalent MnO5 trigonal bipyramids. There are four shorter (2.81 Å) and eight longer (3.20 Å) Ba–O bond lengths. Y3+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Y–O bond lengths are 2.44 Å. There are two inequivalent Mn+2.50+ sites. In the first Mn+2.50+ site, Mn+2.50+ is bonded to five O2- atoms to form distorted MnO5 trigonal bipyramids that share corners with five equivalent MnO5 square pyramids and faces with four equivalent BaO12 cuboctahedra. There are one shorter (2.07 Å) and four longer (2.10 Å) Mn–O bond lengths. In the second Mn+2.50+ site, Mn+2.50+ is bonded to five O2- atoms to form MnO5 square pyramids that share corners with five equivalent MnO5 trigonal bipyramids and faces with four equivalent BaO12 cuboctahedra. There are four shorter (1.97 Å) and one longer (2.10 Å) Mn–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ba2+, two equivalent Y3+, and two Mn+2.50+ atoms. In the second O2- site, O2- is bonded to four equivalent Ba2+ and two Mn+2.50+ atoms to form a mixture of distorted corner and edge-sharing OBa4Mn2 octahedra. The corner-sharing octahedral tilt angles are 2°.

• 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: 1726675
• Report Number(s): mp-1182186
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Ba-Mn-O-Y
BaYMn2O5
crystal structure