Polymorphism of bismuth sesquioxide. I. Pure Bi2O3
نویسندگان
چکیده
منابع مشابه
Tensile Transformation-Mismatch Plasticity of Bismuth Sesquioxide
This study reports on experiments where bismuth sesquioxide (Bi2O3) was cycled between its high-temperature d-phase and one or more of its low-temperature phases (a-, b-, or g-Bi2O3) while being subjected to uniaxial tensile stresses in the range of 0.11–0.55 MPa. Reproducible strain increments of 0.4%–3.9% have been measured after each thermal cycle, and total tensile fracture strains of 10%–2...
متن کاملX-Ray Analysis and Dielectric Characterization of Bismuth Layered (Bi2O3) (Baxfe1-Xo3) Nanocrystalline Ceramic
Polycrystalline ceramics of bismuth layered structure of (Bi2O3)(BaxFe1-xO3) (0.2x0.8, x is in step of 0.2) have been prepared by conventional solid-state reaction method to study its modified dielectric and electrical properties. X-ray diffraction technique is used on the powdered samples for physical characterization and an average grain size of 16 – 21 nm was obtained. The XRD analysis rev...
متن کاملNovel Semisolid Design Based on Bismuth Oxide (Bi2O3) nanoparticles for radiation protection
Objective(S): The dangerous effects of X-ray have been elucidated by scientific studies in occupational health hygiene. X-ray protective like an apron, thyroid shield and gloves have been made of lead (Pb) to protect against X-ray. However, such equipment makes a lot of safety and health problems such as toxicity, weight, inflexibility and troubles usage in a physician. To ove...
متن کاملMetastable β-Bi2O3 nanoparticles with high photocatalytic activity from polynuclear bismuth oxido clusters.
The synthesis of nanoscaled β-Bi(2)O(3) starting from the bismuth oxido clusters [Bi(6)O(4)(OH)(4)](NO(3))(6)·H(2)O, [Bi(22)O(26)(OSiMe(2)(t)Bu)(14)], [Bi(38)O(45)(NO(3))(20)(DMSO)(28)](NO(3))(4)·4DMSO and [Bi(38)O(45)(OMc)(24)(DMSO)(9)]·2DMSO·7H(2)O (OMc = O(2)CC(3)H(5)) under ambient conditions is reported. The metal oxido clusters are regarded as ideal precursors for β-Bi(2)O(3) due to their...
متن کاملSulfonato-encapsulated bismuth(III) oxido-clusters from Bi2O3 in water under mild conditions.
Treatment of Bi(2)O(3) with the acids; S-(+)-10-camphorsulfonic, 2,4,6-mesitylenesulfonic and sulfamic, under sonication at room temperature in water for 2-4 h, results in the formation and subsequent crystallisation of polynuclear bismuth oxido-clusters; [Bi(18)O(12)(OH)(12)(O(3)S-Cam)(18)(H(2)O)(2)], [Bi(38)O(45)(O(3)S-Mes)(24)(H(2)O)(14)] and [Bi(6)O(4)(OH)(4)(O(3)SNH(2))(6)].
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry
سال: 1964
ISSN: 0022-4332
DOI: 10.6028/jres.068a.019