Phase formation and microstructure in Re1-x
CaxBa2Cu3Oz (Re=Y, Eu, Er; x=0, 0.2, 0.3) superconducting ceramics

• Authors: A.K. Stoyanova-Ivanova , S.D. Terzieva , A.D. Staneva , V. Mikli , R. Traksmaa , Y.B. Dimitriev , V.T. Kovachev
• Languages of publication: EN

Abstracts

EN

We have investigated the influence of Ca-substitution and different rare earths on the microstructure of RE1-x
CaxBa2Cu3O7-δ
(RE= Y, Eu, Er; x=0, 0.2, 0.3) superconducting ceramics. Scanning electron microscopy, X-ray microanalysis and energy dispersive spectroscopy have been used to study the microstructure and the chemical composition of the samples. A correlation was established between the polycrystalline microstructure and phase formation depending on the additive content. We observed that calcium is distributed uniformly in the crystals. The formation of minor impurity phases improved the sintering conditions.

Keywords

EN

REBCO superconducting ceramics; Ca-substitution; microstructure; morphology

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2006
• Volume: 4
• Issue: 1
• Pages: 166-173

Dates

published

1 - 3 - 2006

online

1 - 3 - 2006

Contributors

author

A.K. Stoyanova-Ivanova

• Institute of Solid State Physics, Bulgarian Academy of Science, 72 Tzarigradsko Chaussee Blvd., 1784, Sofia, Bulgaria

author

S.D. Terzieva

• Institute of Solid State Physics, Bulgarian Academy of Science, 72 Tzarigradsko Chaussee Blvd., 1784, Sofia, Bulgaria

author

A.D. Staneva

• Department of Silicate Technology, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski, 1756, Sofia, Bulgaria

author

V. Mikli

• Centre for Materials Research, Tallin Technical University, Ehitajate 5, Tallin, 19086, Estonia

author

R. Traksmaa

• Centre for Materials Research, Tallin Technical University, Ehitajate 5, Tallin, 19086, Estonia

author

Y.B. Dimitriev

• Department of Silicate Technology, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski, 1756, Sofia, Bulgaria

author

V.T. Kovachev

• Institute of Solid State Physics, Bulgarian Academy of Science, 72 Tzarigradsko Chaussee Blvd., 1784, Sofia, Bulgaria

References

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Identifiers

DOI

10.1007/s11532-005-0013-x