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| Title: | Direct experimental evidence for the local oxygen non-stoichiometry in electron-doped Nd2-xCexCuO4-delta |
| Authors: | SINGH, OG
HARENDRANATH, CS
PRAKASH, O
PADALIA, BD |
| Keywords: | single-crystals
charge-carriers
superconductor
growth
nd1.85ce0.15cuo4-delta
oxides
t(c) |
| Issue Date: | 1996 |
| Publisher: | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation: | SOLID STATE COMMUNICATIONS, 100(10), 721-725 |
| Abstract: | A direct evidence is obtained for the local oxygen non-stoichiometry in T'-type Nd2-xCexCuO4-delta using a high resolution analytical SEM technique. A correlation between the oxygen non-stoichiometry and superconductivity is established. It is found that the oxygen content increases from the grain boundary towards the interior of a superconducting grain, suggesting a gradual fall in T-c towards the core. Our results reveal that critical levels of carriers and oxygen vacancies are essential for the T'-type cuprates to exhibit superconductivity. Copyright (C) 1996 |
| URI: | http://dx.doi.org/10.1016/0038-1098(96)80047-0
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10727
http://hdl.handle.net/10054/10727 |
| ISSN: | 0038-1098 |
| Appears in Collections: | Article
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