Microstructure and thermal properties of quasi-equal rare earth substitution Y0.5Gd0.5Ba2Cu3O6.94 superconductor

• Authors: Stanimira Terzieva , Angelina Stoyanova-Ivanova , Boris Shivachev , Bonka Terzijska , Andrzej Zaleski , Halina Misiorek , Valdek Mikli
• Languages of publication: EN

Abstracts

EN

Sintering effects in YBa2Cu3Oz samples with quasi-equal rare earth substitution have been investigated. It has been shown that the Y-123 type compound can be formed when gadolinium is partially substituted (in this case 50% atomic substitution) for yttrium. The superconducting compound was obtained by the optimized ceramic method, including solid-state reaction, melting and sintering, controlled by X-ray diffraction. The microstructure was investigated by SEM and energy dispersive X-ray analyses. An AC susceptibility measurement has shown that T
c =93 K. Temperature-dependece of the thermal conductivity (4.5–300 K) of the polycrystalline Y0.5Gd0.5Ba2Cu3O6.94 sample was also measured.

Keywords

EN

superconducting ceramic; microstructure; thermal properties

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2009
• Volume: 7
• Issue: 1
• Pages: 84-88

Dates

published

1 - 3 - 2009

online

8 - 1 - 2009

Contributors

author

Stanimira Terzieva

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

author

Angelina Stoyanova-Ivanova

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

author

Boris Shivachev

• Central Laboratory of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 107, 1113, Sofia, Bulgaria

author

Bonka Terzijska

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

author

Andrzej Zaleski

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-950, Wroclaw, Poland

author

Halina Misiorek

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-950, Wroclaw, Poland

author

Valdek Mikli

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

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Identifiers

DOI

10.2478/s11534-008-0133-y