BaBiO₃ has the perovskite structure, but tilting of the BiO₆ octahedra destroy the ideal cubic symmetry except at temperatures above 820 K. BaBiO₃ is a diamagnetic semiconductor due to a charge density wave (CDW), which is equivalent to a Ba₂Bi³⁺Bi⁵⁺O₆ representation. Recent calculations and experimental results confirm that there is...
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737 6749.
E-mail address: arthur.sleight@oregonstate.edu
Arthur W. Sleight ⇑
Department of Chemistry
BaBiO₃ has the perovskite structure, but tilting of the BiO₆ octahedra destroy the ideal cubic symmetry except at temperatures above 820 K. BaBiO₃ is a diamagnetic semiconductor due to a charge density wave (CDW), which is equivalent to a Ba₂Bi³⁺Bi⁵⁺O₆ representation. Recent calculations and experimental results confirm that there is...
Full Text:
”
Arthur
W.
Sleight
1. Coexistence
of
Ibmm
and
I4/mcm
phases
2. Tilt
BaBiO₃ has the perovskite structure, but tilting of the BiO₆ octahedra destroy the ideal cubic symmetry except at temperatures above 820 K. BaBiO₃ is a diamagnetic semiconductor due to a charge density wave (CDW), which is equivalent to a Ba₂Bi³⁺Bi⁵⁺O₆ representation. Recent calculations and experimental results confirm that there is...
Two framework oxide materials of the MO₃ network type have been synthesized and structurally characterized by synchrotron and X-ray powder diffraction and the Rietveld method in the temperature range 25~500 K. The results show one of them to be a low thermal expansion material. Theoretical studies of negative thermal expansion...