A New High-Pressure Phase of Bismuth Oxide

A new polymorphic form of bismuth oxide (Bi 2O 3) is synthesized by a high-pressure technique (6 GPa and 880°C, and subsequently slow cooling). This phase can exist under ambient conditions, but it is fairly unstable. The crystal structure is determined to be the A-type rare-earth sesquioxide struct...

Full description

Saved in:
Bibliographic Details
Published in:Materials research bulletin 1998-02, Vol.33 (2), p.289-292
Main Authors: Atou, T, Faqir, H, Kikuchi, M, Chiba, H, Syono, Y
Format: Article
Language:English
Subjects:
A. oxides
C. high pressure
C. X-ray diffraction
Condensed matter: structure, mechanical and thermal properties
D. crystal structure
D. phase transition
Exact sciences and technology
Inorganic compounds
Physics
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
Water, oxides, hydroxides, peroxides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new polymorphic form of bismuth oxide (Bi 2O 3) is synthesized by a high-pressure technique (6 GPa and 880°C, and subsequently slow cooling). This phase can exist under ambient conditions, but it is fairly unstable. The crystal structure is determined to be the A-type rare-earth sesquioxide structure that is isotypic to La 2O 3. Hexagonal cell parameters are measured to be a = 3.878(1) Å and c = 6.303(1) Å. The pressure effect on a polarizable 6s2 lone pair character of Bi 3+ is discussed.
ISSN:0025-5408
1873-4227
DOI:10.1016/S0025-5408(97)00216-X