Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
The results of a systematic electron diffraction study of short-range oxygen-vacancy ordering in ceramic Ba sub 2 YCu sub 3 O sub 7-- delta superconductors with 0.08 < = delta < = 0.67, prepared by a Zr-getter technique are presented. In addition to the two types of orderings with reduced wave vectors (1/2,0,0) and (2/5,0,0), a new vacancy ordering with reduced wave vector (1 /3,0,0) has been found. A vacancy ordering with a large correlation length ( approx 150 A) in the c-axis direction has been observed in samples with delta = 0.5. A tweed-like microstructure at delta = 0.61 was also observed, which is caused by a high density of microtwins. 15 ref.--AA
Sprache
Englisch
Identifikatoren
ISSN: 0163-1829
eISSN: 1095-3795
Titel-ID: cdi_proquest_miscellaneous_25117862
Format
–
Weiterführende Literatur
Empfehlungen zum selben Thema automatisch vorgeschlagen von bX