Structural and electronic properties of indium-doped YBa2Cu3Oσ
| Autor: | James A. Sommers, J. E. Ostenson, Georg Weidlich, Douglas A. Keszler, John A. Gardner, William E. Evenson, Ruiping Wang, Michael Goelz |
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| Rok vydání: | 1991 |
| Předmět: |
Superconductivity
Materials science Mechanical Engineering Inorganic chemistry Analytical chemistry chemistry.chemical_element Yttrium Condensed Matter Physics chemistry Mechanics of Materials Meissner effect Formula unit X-ray crystallography General Materials Science Solubility Indium Solid solution |
| Zdroj: | Journal of Materials Research. 6:446-449 |
| ISSN: | 2044-5326 0884-2914 |
| Popis: | We have measured x-ray diffraction patterns and Meissner flux exclusion of YBa2Cu3Oσ containing indium. All samples were synthesized at temperatures near 940 °C, and the data indicate the indium atomic solubility to be approximately 3% per formula unit. At the solubility limit Tc is reduced from 92.7 K to 91.3 K relative to undoped samples, and the total magnetic flux excluded is reduced from approximately 40% to about 10%. For samples of formula InxY1−xBa2Cu3Oσ concentrations of other Y–Ba–Cu oxide phases are low and do not depend systematically on x. These results indicate that indium substitutes predominantly for yttrium when x is small. |
| Databáze: | OpenAIRE |
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