Structure of BaBiO3-δ at high temperature

Shiyou Pei; J. D. Jorgensen; D. G. Hinks; P. Lightfoot; Ying Zheng; D. R. Richards; B. Dabrowski; A. W. Mitchell

doi:10.1016/0025-5408(90)90123-J

Structure of BaBiO_3-δ at high temperature

Shiyou Pei^*, J. D. Jorgensen, D. G. Hinks, P. Lightfoot, Ying Zheng, D. R. Richards, B. Dabrowski, A. W. Mitchell

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Using in situ neutron powder diffraction, we have studied the structures of BaBiO_3-δ at high-temperature. Above 520°C, fully oxygenated BaBiO₃ has a double cubic perovskite structure (space group Fm3̄m; a=8.8 A ̊) exhibiting a commensurate charge density wave (CDW). Depleting oxygen destroys this commensurate CDW, giving rise to a primitive cubic perovskite structure with one Bi site (space group Pm3̄m; a=4.4 A ̊). Further reduction in oxygen content leads to a pseudo-tetragonal phase with δ≈0.5. We propose that oxygen deficient BaBiO_3-δ in the primitive cubic phase could be metallic as a result of losing the commensurate CDW.

Original language	English
Pages (from-to)	1467-1476
Number of pages	10
Journal	Materials Research Bulletin
Volume	25
Issue number	12
DOIs	https://doi.org/10.1016/0025-5408(90)90123-J
Publication status	Published - 1 Jan 1990

Access to Document

10.1016/0025-5408(90)90123-J

Cite this

@article{54e2af42032e49eab08154bd529bbd8c,

title = "Structure of BaBiO3-δ at high temperature",

abstract = "Using in situ neutron powder diffraction, we have studied the structures of BaBiO3-δ at high-temperature. Above 520°C, fully oxygenated BaBiO3 has a double cubic perovskite structure (space group Fm{\=3}m; a=8.8 A ̊) exhibiting a commensurate charge density wave (CDW). Depleting oxygen destroys this commensurate CDW, giving rise to a primitive cubic perovskite structure with one Bi site (space group Pm{\=3}m; a=4.4 A ̊). Further reduction in oxygen content leads to a pseudo-tetragonal phase with δ≈0.5. We propose that oxygen deficient BaBiO3-δ in the primitive cubic phase could be metallic as a result of losing the commensurate CDW.",

author = "Shiyou Pei and Jorgensen, {J. D.} and Hinks, {D. G.} and P. Lightfoot and Ying Zheng and Richards, {D. R.} and B. Dabrowski and Mitchell, {A. W.}",

year = "1990",

month = jan,

day = "1",

doi = "10.1016/0025-5408(90)90123-J",

language = "English",

volume = "25",

pages = "1467--1476",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier",

number = "12",

}

TY - JOUR

T1 - Structure of BaBiO3-δ at high temperature

AU - Pei, Shiyou

AU - Jorgensen, J. D.

AU - Hinks, D. G.

AU - Lightfoot, P.

AU - Zheng, Ying

AU - Richards, D. R.

AU - Dabrowski, B.

AU - Mitchell, A. W.

PY - 1990/1/1

Y1 - 1990/1/1

N2 - Using in situ neutron powder diffraction, we have studied the structures of BaBiO3-δ at high-temperature. Above 520°C, fully oxygenated BaBiO3 has a double cubic perovskite structure (space group Fm3̄m; a=8.8 A ̊) exhibiting a commensurate charge density wave (CDW). Depleting oxygen destroys this commensurate CDW, giving rise to a primitive cubic perovskite structure with one Bi site (space group Pm3̄m; a=4.4 A ̊). Further reduction in oxygen content leads to a pseudo-tetragonal phase with δ≈0.5. We propose that oxygen deficient BaBiO3-δ in the primitive cubic phase could be metallic as a result of losing the commensurate CDW.

AB - Using in situ neutron powder diffraction, we have studied the structures of BaBiO3-δ at high-temperature. Above 520°C, fully oxygenated BaBiO3 has a double cubic perovskite structure (space group Fm3̄m; a=8.8 A ̊) exhibiting a commensurate charge density wave (CDW). Depleting oxygen destroys this commensurate CDW, giving rise to a primitive cubic perovskite structure with one Bi site (space group Pm3̄m; a=4.4 A ̊). Further reduction in oxygen content leads to a pseudo-tetragonal phase with δ≈0.5. We propose that oxygen deficient BaBiO3-δ in the primitive cubic phase could be metallic as a result of losing the commensurate CDW.

UR - http://www.scopus.com/inward/record.url?scp=0025530356&partnerID=8YFLogxK

U2 - 10.1016/0025-5408(90)90123-J

DO - 10.1016/0025-5408(90)90123-J

M3 - Article

AN - SCOPUS:0025530356

SN - 0025-5408

VL - 25

SP - 1467

EP - 1476

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 12

ER -

Structure of BaBiO_3-δ at high temperature

Abstract

Access to Document

Other files and links

Fingerprint

Cite this