Systematics of bismuth layer compounds
| Autor: | E. C. Subbarao |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Materials science
Ionic radius biology Valency chemistry.chemical_element Crystal structure Condensed Matter Physics biology.organism_classification Ferroelectricity Electronic Optical and Magnetic Materials Bismuth Aurivillius Crystallography chemistry Control and Systems Engineering Materials Chemistry Ceramics and Composites Curie temperature Cuprate Electrical and Electronic Engineering |
| Zdroj: | Integrated Ferroelectrics. 12:33-41 |
| ISSN: | 1607-8489 1058-4587 |
| Popis: | The crystal structure of bismuth compounds was established by Aurivillius and the general formula (Bi2O2)2+(Mn−1RnO3n+1)2− indicates that n (1 to 6) perovskite-like layers. M is a cation of 1, 2 or 3 valency and R is a smaller cation of 3, 4, 5 or 6 valency. The properties of a large number of compounds of this family (lattice parameters, ferroelectric Curie temperature, etc.) are correlated with composition, ionic size, value of n, etc. Attention is drawn to their low values of lattice distorition, coercive field and electric fatigue, while possessing high Curie temperatures. The recently discovered cuprate superconductors have compositional (R = Cu) and structural similarity to bismuth layer ferroelectrics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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