Model of oxygen vacancy ordering in YBa2Cu3O7-δ based on electron diffraction data
Creators
- 1. Universidad Complutense de Madrid (Spain). Dept. de Fisica del Estado Solido
Description
It is well known that perovskite-like solid bodies are characterized by tendency to nonstoichiometry; its mechanism of realization is determined by geometrical conditions of coordination cation surrounding and by possibilities of change of oxidation degrees. Copper-containing high-temperature superconductors are also noted for their tendency to oxygen deficiency. It was established that YBa2Cu3O7-δ excited in wide range of compositions: from RO7.2 to RO6 (where R=YBa2Cu3). One-, two-, and three-dimensional ordering of oxygen vacancies was revealed in high-temperature superconductors with composition, lying in this range. The results mean, that intermediate ordered phases, which can be nonstoichiometric ones, exist in homogeneity region of YBaCuO
Additional details
Additional titles
- Original title (Russian)
- Модели упорядочения кислородных вакансий в YBa
Publishing Information
- Journal Title
- Sverkhprovodimost': Fizika, Khimiya, Tekhnika
- Journal Volume
- 3
- Journal Issue
- 8
- Series
- Sverkhprovod.: Fiz. Khim. Tekh.
- Journal Page Range
- 1689-1697
INIS
- Country of Publication
- USSR
- Country of Input or Organization
- USSR
- INIS RN
- 22074160
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM COMPOUNDS; CRYSTAL LATTICES; CUPRATES; ELECTRON DIFFRACTION; HIGH-TC SUPERCONDUCTORS; IMAGES; VACANCIES; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DIFFRACTION; OXYGEN COMPOUNDS; POINT DEFECTS; SCATTERING; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS