caa a22 4500 467884692 CHVBK 20180406152730.0 cr unu---uuuuu 170328e20060201xx s 000 0 eng 10.1007/s10948-006-0140-4 doi (NATIONALLICENCE)springer-10.1007/s10948-006-0140-4 HRTEM and EELS Studies on Structural Defects in the Superconductor Sr2CuO2+δCl2− y Newly Synthesized Under High Pressure [Elektronische Daten] [H. Yang, Q. Liu, F. Li, C. Jin, R. Yu] Structural defects in the newly high-pressure synthesized superconductor Sr2CuO2+δCl2−y have been studied by means of high-resolution transmission electron microscopy and parallel electron energy-loss spectroscopy. Two types of grain boundaries were found in the material. One is the amorphous boundaries usually lying in the ab-planes. The other is the structurally intact grain boundaries, and most of them are large-angle boundaries. One of the large angles frequently observed is the 90°〈110〉 asymmetrical tilt boundary. In some domains, periodicity lengths were changed due to the lattice distortion usually associated with atom deficiency. These domains can be regarded as "second-phase particles” embedded in the perfect grains. O-K electron energy-loss spectroscopy results suggest that those defect domains are in the hole-poor states. Quantitative composition analysis from energy dispersive of X-ray suggests the hole-poorness is caused by oxygen deficiency. Dislocations, such as the $${\textstyle{1 \over 2}}$$ a[110] and $${\textstyle{1 \over 2}}$$ c[001] edge dislocations, were also observed in the material. In most cases, those dislocations are very complex and exhibit stacking faults. Springer Science + Business Media, Inc., 2006 superconductor Sr2CuO2+δCl2− y nationallicence structural defects nationallicence HRTEM nationallicence EELS nationallicence Yang H. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut Liu Q. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut Li F. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut Jin C. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut Yu R. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut Journal of Superconductivity and Novel Magnetism Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 19/1-2(2006-02-01), 129-133 1557-1939 19:1-2<129 2006 19 10948 https://doi.org/10.1007/s10948-006-0140-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-006-0140-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yang H. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut NATIONALLICENCE 700 1- Liu Q. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut NATIONALLICENCE 700 1- Li F. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut NATIONALLICENCE 700 1- Jin C. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut NATIONALLICENCE 700 1- Yu R. Laboratory for Extreme Condition Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, P.O. Box 603, 100080, Beijing, P.R. China aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 19/1-2(2006-02-01), 129-133 1557-1939 19:1-2<129 2006 19 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer