Comparative study on structure and magnetic properties of polycrystalline Pr xY 1-xBa 2Cu 3O 7-δ prepared in oxygen and argon atmosphere

C. Stari; L. Cichetto; C. H.M.A. Peres; V. A.G. Rivera; S. Sergeenkov; C. A. Cardoso; E. Marega; F. M. Araújo-Moreira

doi:10.1016/j.jallcom.2012.03.048

Comparative study on structure and magnetic properties of polycrystalline Pr _xY _1-xBa ₂Cu ₃O _7-δ prepared in oxygen and argon atmosphere

C. Stari, L. Cichetto, C. H.M.A. Peres, V. A.G. Rivera, S. Sergeenkov, C. A. Cardoso, E. Marega, F. M. Araújo-Moreira

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9 Scopus citations

Abstract

We report a systematic study on the influence of the synthesis routes on the structural and magnetic properties of polycrystalline Pr _xY _1-xBa ₂Cu ₃O _7-δ. We have prepared high-quality samples of this material by following a sol-gel method based on heat treatment in both inert argon and oxygen atmospheres in order to compare their effect on the formation of the superconducting phase using X-ray powder diffraction. Magnetic measurements (DC and AC susceptibility) clearly demonstrate that, for the same concentration of Pr, the superconducting transition temperature markedly increases in all samples prepared in argon atmosphere, including pure Pr-123.

Original language	English
Pages (from-to)	135-140
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	528
DOIs	https://doi.org/10.1016/j.jallcom.2012.03.048
State	Published - 5 Jul 2012

Bibliographical note

Funding Information:
We thank Marcel Ausloos for useful discussions. The authors gratefully acknowledge Brazilian agencies FAPESP , CNPq and CAPES for financial support. Cecilia Stari thanks CAPES (IEL Nacional-Brazil) for the fellowship.

Keywords

Argon gas atmosphere
Critical temperature
Magnetic susceptibility
Polycrystalline Pr Y Ba Cu O
Sol-gel method
Structure

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10.1016/j.jallcom.2012.03.048

Cite this

Stari, C., Cichetto, L., Peres, C. H. M. A., Rivera, V. A. G., Sergeenkov, S., Cardoso, C. A., Marega, E., & Araújo-Moreira, F. M. (2012). Comparative study on structure and magnetic properties of polycrystalline Pr _xY _1-xBa ₂Cu ₃O _7-δ prepared in oxygen and argon atmosphere. Journal of Alloys and Compounds, 528, 135-140. https://doi.org/10.1016/j.jallcom.2012.03.048

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abstract = "We report a systematic study on the influence of the synthesis routes on the structural and magnetic properties of polycrystalline Pr xY 1-xBa 2Cu 3O 7-δ. We have prepared high-quality samples of this material by following a sol-gel method based on heat treatment in both inert argon and oxygen atmospheres in order to compare their effect on the formation of the superconducting phase using X-ray powder diffraction. Magnetic measurements (DC and AC susceptibility) clearly demonstrate that, for the same concentration of Pr, the superconducting transition temperature markedly increases in all samples prepared in argon atmosphere, including pure Pr-123.",

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note = "Funding Information: We thank Marcel Ausloos for useful discussions. The authors gratefully acknowledge Brazilian agencies FAPESP , CNPq and CAPES for financial support. Cecilia Stari thanks CAPES (IEL Nacional-Brazil) for the fellowship.",

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AU - Stari, C.

AU - Cichetto, L.

AU - Peres, C. H.M.A.

AU - Rivera, V. A.G.

AU - Sergeenkov, S.

AU - Cardoso, C. A.

AU - Marega, E.

AU - Araújo-Moreira, F. M.

N1 - Funding Information: We thank Marcel Ausloos for useful discussions. The authors gratefully acknowledge Brazilian agencies FAPESP , CNPq and CAPES for financial support. Cecilia Stari thanks CAPES (IEL Nacional-Brazil) for the fellowship.

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AB - We report a systematic study on the influence of the synthesis routes on the structural and magnetic properties of polycrystalline Pr xY 1-xBa 2Cu 3O 7-δ. We have prepared high-quality samples of this material by following a sol-gel method based on heat treatment in both inert argon and oxygen atmospheres in order to compare their effect on the formation of the superconducting phase using X-ray powder diffraction. Magnetic measurements (DC and AC susceptibility) clearly demonstrate that, for the same concentration of Pr, the superconducting transition temperature markedly increases in all samples prepared in argon atmosphere, including pure Pr-123.

KW - Argon gas atmosphere

KW - Critical temperature

KW - Magnetic susceptibility

KW - Polycrystalline Pr Y Ba Cu O

KW - Sol-gel method

KW - Structure

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