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

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Terzieva S., Stoyanova-Ivanova A., Shivachev B., Terzijska B., Zaleski A., Misiorek H., Mikli V.

Open Physics

2009

vol. 7

issue 1

84-88

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.

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1 Open Physics

1 2009

1 Mikli V.

1 Misiorek H.

1 Shivachev B.

1 Stoyanova-Ivanova A.

1 Terzieva S.

1 Terzijska B.

1 Zaleski A.

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