An ordered oxygen deficiency formed by electron irradiation of Cl-0201-type Sr2CuO2+δCl2-y superconductor
Description
Using a 200?keV electron beam with the intensity ∼7 x 1016?e?nm-2 as an irradiation source, we investigated the irradiation effects on the microstructure of a new superconductor, Sr2CuO2+δCl2-y, by means of high-resolution transmission electron microscopy, electron energy loss spectroscopy (EELS) and energy dispersive analysis of x-rays (EDX). When the sample was illuminated along the [001] direction, a kind of modulated structure with modulation vector q=(2π/αp)(±1/10,1/5,0) and wavelength λ = ∼8.81 A was found to develop, while when the sample was illuminated along the [100] direction, there was no evidence of a transition of the modulated structure. The O K, Cu L2,3 EELS spectra and EDX data suggest that the modulated structure results from an ordered oxygen deficiency and the O vacancies are suggested to be located in the Cu-O plane
Availability note (English)
Available online at http://stacks.iop.org/0953-2048/18/1360/sust5_10_019.pdf or at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-2048/18/1360/sust5_10_019.pdf; http://www.iop.org/;
- DOI
- 10.1088/0953-2048/18/10/019;
- PII
- S0953-2048(05)01632-5;
Publishing Information
- Journal Title
- Superconductor Science and Technology
- Journal Volume
- 18
- Journal Issue
- 10
- Journal Page Range
- p. 1360-1364
- ISSN
- 0953-2048
- CODEN
- SUSTEF
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36095598
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- COPPER OXIDES; ELECTRON BEAMS; ELECTRONS; ENERGY-LOSS SPECTROSCOPY; IRRADIATION; MICROSTRUCTURE; MODULATION; OXYGEN; SPECTRA; STRONTIUM OXIDES; SUPERCONDUCTORS; TRANSMISSION ELECTRON MICROSCOPY; VACANCIES; VECTORS; WAVELENGTHS; X RADIATION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BEAMS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; ELECTRON SPECTROSCOPY; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; IONIZING RADIATIONS; LEPTON BEAMS; LEPTONS; MICROSCOPY; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PARTICLE BEAMS; POINT DEFECTS; RADIATIONS; SPECTROSCOPY; STRONTIUM COMPOUNDS; TENSORS; TRANSITION ELEMENT COMPOUNDS