Manfred Enengl, Ernö Kuzmann, Z. Homonnay, Gerhard Gritzner,
"Preparation, Properties and Mössbauer Spectra of Cobalt-doped (Tl,Pb)-1223 Superconductors"
, in Physica C: Superconductivity, Vol. 377, Seite(n) 565 - 570, 9-2002, ISSN: 0921-4534, Preparation, properties and Mössbauer spectra of cobalt-doped (Tl,Pb)-1223 superconductors, M. Enengl, E. Kuzmann, Z. Homonnay and G. Gritzner, Physica C 377 (2002) 565 - 570
Original Titel:
Preparation, Properties and Mössbauer Spectra of Cobalt-doped (Tl,Pb)-1223 Superconductors
Sprache des Titels:
Englisch
Original Kurzfassung:
The introduction of the Co both as natural Co and as the Mössbauer active 57Co into a Tl-based 1223 superconductor was investigated. The Co-doped superconductors of the composition (Tl0.5Pb0.5)(Ba0.2Sr0.8)2Ca2(Cu1-xCox)3Oy (x: 0.01, 0.03, 0.05 and 0.10) were characterised with respect to critical temperature, critical current densities, microstructure and composition of the superconducting and secondary phases. Co doping at these low levels decreased the critical temperatures by 4 K to 113 K for x = 0.01, and by 15 K to 102 K for x = 0.03 and by 35 K to 82 K for x = 0.05. Energy dispersive X-ray (EDX) analysis showed that Co was incorporated in the superconducting crystallites. The Mössbauer emission spectrum of 57Co was resolved into a slightly asymmetric doublet, assigned to Co substituting for Cu in the square planar, four fold oxygen co-ordinated site.
Sprache der Kurzfassung:
Englisch
Journal:
Physica C: Superconductivity
Volume:
377
Seitenreferenz:
565 - 570
Erscheinungsmonat:
9
Erscheinungsjahr:
2002
Notiz zum Zitat:
Preparation, properties and Mössbauer spectra of cobalt-doped (Tl,Pb)-1223 superconductors, M. Enengl, E. Kuzmann, Z. Homonnay and G. Gritzner, Physica C 377 (2002) 565 - 570
Forschungs-