Preparation, Properties and Mössbauer Spectra of Cobalt-doped (Tl,Pb)-1223 Superconductors

Manfred Enengl; Ernö Kuzmann; Z. Homonnay; Gerhard Gritzner

doi:10.1016/S0921-4534(02)00628-7

Preparation, Properties and Mössbauer Spectra of Cobalt-doped (Tl,Pb)-1223 Superconductors

Manfred Enengl, Ernö Kuzmann, Z. Homonnay, Gerhard Gritzner

Institute of Chemical Technology of Inorganic Materials

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	565 - 570
Number of pages	6
Journal	Physica C: Superconductivity
Volume	377
DOIs	https://doi.org/10.1016/S0921-4534(02)00628-7
Publication status	Published - Sept 2002

Fields of science

104005 Electrochemistry
104006 Solid state chemistry
104014 Surface chemistry
104017 Physical chemistry
105113 Crystallography
105116 Mineralogy
503013 Subject didactics of natural sciences
204 Chemical Process Engineering
204001 Inorganic chemical technology
205016 Materials testing
210006 Nanotechnology
211104 Metallurgy

Access to Document

10.1016/S0921-4534(02)00628-7

Cite this

@article{d465b6dc30a34a3094e381c3e366f0db,

title = "Preparation, Properties and M{\"o}ssbauer Spectra of Cobalt-doped (Tl,Pb)-1223 Superconductors",

abstract = "The introduction of the Co both as natural Co and as the M{\"o}ssbauer 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 M{\"o}ssbauer 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.",

author = "Manfred Enengl and Ern{\"o} Kuzmann and Z. Homonnay and Gerhard Gritzner",

year = "2002",

month = sep,

doi = "10.1016/S0921-4534(02)00628-7",

language = "English",

volume = "377",

pages = "565 -- 570",

journal = "Physica C: Superconductivity",

issn = "0921-4534",

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TY - JOUR

T1 - Preparation, Properties and Mössbauer Spectra of Cobalt-doped (Tl,Pb)-1223 Superconductors

AU - Enengl, Manfred

AU - Kuzmann, Ernö

AU - Homonnay, Z.

AU - Gritzner, Gerhard

PY - 2002/9

Y1 - 2002/9

N2 - 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.

AB - 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.

U2 - 10.1016/S0921-4534(02)00628-7

DO - 10.1016/S0921-4534(02)00628-7

M3 - Article

SN - 0921-4534

VL - 377

SP - 565

EP - 570

JO - Physica C: Superconductivity

JF - Physica C: Superconductivity

ER -