Title of article :
A New High-Pressure Phase of Bismuth Oxide
Author/Authors :
Atou، نويسنده , , T and Faqir، نويسنده , , H and Kikuchi، نويسنده , , M and Chiba، نويسنده , , H and Syono، نويسنده , , Y، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1998
Abstract :
A new polymorphic form of bismuth oxide (Bi2O3) 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 La2O3. Hexagonal cell parameters are measured to be a = 3.878(1) إ and c = 6.303(1) إ. The pressure effect on a polarizable 6s2 lone pair character of Bi3+ is discussed.
Keywords :
A. Oxides , C. High pressure , C. X-ray diffraction , D. Crystal structure , D. Phase transition
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin
