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Titolo:
CRYSTAL-STRUCTURE OF YBCO THIN-FILMS GROWN AT SUBSTRATE TEMPERATURES OF ABOUT 500-DEGREES-C
Autore:
KOHLER A; LINZEN S; KRAUSSLICH J; SEIDEL P; FREITAG B; MADER W;
Indirizzi:
UNIV JENA,INST FESTKORPERPHYS,MAX WIEN PL 1 D-07743 JENA GERMANY UNIV JENA,INST OPT & QUANTENELEKT D-07743 JENA GERMANY UNIV BONN,INST ANORGAN CHEM D-53117 BONN GERMANY
Titolo Testata:
Physica. C, Superconductivity
, volume: 282, anno: 1997,
parte:, 2
pagine: 571 - 572
SICI:
0921-4534(1997)282:<571:COYTGA>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
4
Recensione:
Indirizzi per estratti:
Citazione:
A. Kohler et al., "CRYSTAL-STRUCTURE OF YBCO THIN-FILMS GROWN AT SUBSTRATE TEMPERATURES OF ABOUT 500-DEGREES-C", Physica. C, Superconductivity, 282, 1997, pp. 571-572

Abstract

Nonsuperconducting YBCO thin films were prepared by laser deposition at 500 degrees C. The crystal structure of the films measured by XRD seems to be cubic: cr = b = 3.890 Angstrom, c = 3.867 Angstrom. From EDX analysis follows within an accuracy of 1-2% there is no stoichiometric difference between this nonsuperconducting YBCO and the common 90 Ksuperconductor especially regarding the oxygen content. An existing structural model of a simple cubic YBCO perovskite unit cell, however, does not sufficient represent the experimental results. We suggest a modified model which based on known defects of the common c-axis YBCO. This model is discussed in consideration of detailed ED and HTREM investigations.

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Documento generato il 30/09/20 alle ore 09:20:26