The Local Structure Transformation in Nd1.85Ce0.15CuO4 Films Irradiated by He+ Ions: Polarized EXAFS Study Full article
Journal |
Physica C: Superconductivity and its Applications
ISSN: 0921-4534 , E-ISSN: 1873-2143 |
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Output data | Year: 1994, Volume: 234, Number: 1-2, Pages: 68-76 Pages count : 9 DOI: 10.1016/0921-4534(94)90056-6 | ||||
Tags | X-RAY-ABSORPTION; CENTERED LATTICE INSTABILITIES; FINE-STRUCTURE; SUPERCONDUCTORS; La1.8Sr0.2CuO4; YBa2Cu3O7; CARRIERS | ||||
Authors |
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Affiliations |
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Funding (2)
1 | International Science Foundation | MG 2000 |
2 | The Ministry of Education and Science of the Russian Federation |
Abstract:
Copper K edge polarized EXAFS data of Nd1.85Ce0.15CuO4 films have indicated that He+ ion irradiation induces radiative defects in the Nd(Ce)-O(2) structures. Static disorder with typical displacement from the primary plane site up to 0.1 Å for the O(2) environments was observed. A cumulant treatment has been applied for space-disorder analyses of the Nd(Ce) site in irradiated samples. We estimated the C2, C3, C4 expansion coefficients and found that the cumulant series of Cu-Nd(Ce) distance distribution is convergent at the range of photoelectron wave vector k=4−11 Å−1 and a radiation fluence 1016 cm−2 We have not found any local changes in the CuO2 plane structure after irradiation. The data obtained and superconductivity deterioration in the irradiated compounds point out the essential role of the ordering in the Nd(Ce)-O(2) complexes for superconductivity in the CuO2 planes.
Cite:
Ignatov A.Y.
, Menushenkov A.P.
, Ivanov A.A.
, Kochubey D.I.
The Local Structure Transformation in Nd1.85Ce0.15CuO4 Films Irradiated by He+ Ions: Polarized EXAFS Study
Physica C: Superconductivity and its Applications. 1994. V.234. N1-2. P.68-76. DOI: 10.1016/0921-4534(94)90056-6 WOS Scopus РИНЦ
The Local Structure Transformation in Nd1.85Ce0.15CuO4 Films Irradiated by He+ Ions: Polarized EXAFS Study
Physica C: Superconductivity and its Applications. 1994. V.234. N1-2. P.68-76. DOI: 10.1016/0921-4534(94)90056-6 WOS Scopus РИНЦ
Dates:
Submitted: | Jun 22, 1994 |
Accepted: | Oct 4, 1994 |
Published print: | Dec 1, 1994 |
Published online: | Aug 9, 2002 |
Identifiers:
Web of science | WOS:A1994PV77900011 |
Scopus | 2-s2.0-0028741978 |
Elibrary | 31081582 |
Chemical Abstracts | 1995:256010 |
Chemical Abstracts (print) | 122:120368 |
OpenAlex | W2094623959 |