Magnetic properties of polycrystalline PrxY1-xBa2Cu3 O7-δ

C. Stari; V. A.G. Rivera; A. J.C. Lanfredi; C. A. Cardoso; E. R. Leite; A. W. Mombrú; F. M. Araujo-Moreira

doi:10.1016/j.jmmm.2008.02.096

Magnetic properties of polycrystalline Pr_xY_1-xBa₂Cu₃ O_7-δ

C. Stari, V. A.G. Rivera, A. J.C. Lanfredi, C. A. Cardoso, E. R. Leite, A. W. Mombrú, F. M. Araujo-Moreira

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

3 Scopus citations

Abstract

In this work, we report a part of a systematic study of the influence of the synthesis routes on the properties of polycrystalline samples of Pr_xY_1-xBa₂Cu₃ O_7-δ. We have prepared high-quality samples of this material by following a sol-gel method, associated with heat treatment in both an inert argon and an oxygen atmospheres in order to compare their influence on the formation of the superconducting phase. Magnetic measurement (AC susceptibility) show that the superconducting transition temperature (T_C) increases in samples prepared in argon when compared to those prepared in oxygen, for the same composition and Pr fraction less than 0.5. In addition to this, preliminary results of AC and DC magnetic susceptibility show superconductivity for samples with Pr fraction higher than 0.5 (and up to 0.9) prepared under argon flux, which may indicate the existence of stable superconductivity for all compositions, including pure Pr-123.

Original language	English
Pages (from-to)	e504-e506
Journal	Journal of Magnetism and Magnetic Materials
Volume	320
Issue number	14
DOIs	https://doi.org/10.1016/j.jmmm.2008.02.096
State	Published - Jul 2008
Externally published	Yes

Bibliographical note

Funding Information:
The authors gratefully acknowledge Brazilian agencies CNPq, CAPES and FAPESP for financial support. C.S. thanks CAPES (IEL Nacional—Brazil) for the fellowship.

Keywords

PrBaCuO
Superconductivity

Access to Document

10.1016/j.jmmm.2008.02.096

Cite this

@article{81135a298a2b4c7e9471ebb65c263f4c,

title = "Magnetic properties of polycrystalline PrxY1-xBa2Cu3 O7-δ",

abstract = "In this work, we report a part of a systematic study of the influence of the synthesis routes on the properties of polycrystalline samples of PrxY1-xBa2Cu3 O7-δ. We have prepared high-quality samples of this material by following a sol-gel method, associated with heat treatment in both an inert argon and an oxygen atmospheres in order to compare their influence on the formation of the superconducting phase. Magnetic measurement (AC susceptibility) show that the superconducting transition temperature (TC) increases in samples prepared in argon when compared to those prepared in oxygen, for the same composition and Pr fraction less than 0.5. In addition to this, preliminary results of AC and DC magnetic susceptibility show superconductivity for samples with Pr fraction higher than 0.5 (and up to 0.9) prepared under argon flux, which may indicate the existence of stable superconductivity for all compositions, including pure Pr-123.",

keywords = "PrBaCuO, Superconductivity",

author = "C. Stari and Rivera, {V. A.G.} and Lanfredi, {A. J.C.} and Cardoso, {C. A.} and Leite, {E. R.} and Mombr{\'u}, {A. W.} and Araujo-Moreira, {F. M.}",

note = "Funding Information: The authors gratefully acknowledge Brazilian agencies CNPq, CAPES and FAPESP for financial support. C.S. thanks CAPES (IEL Nacional—Brazil) for the fellowship.",

year = "2008",

month = jul,

doi = "10.1016/j.jmmm.2008.02.096",

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T1 - Magnetic properties of polycrystalline PrxY1-xBa2Cu3 O7-δ

AU - Stari, C.

AU - Rivera, V. A.G.

AU - Lanfredi, A. J.C.

AU - Cardoso, C. A.

AU - Leite, E. R.

AU - Mombrú, A. W.

AU - Araujo-Moreira, F. M.

N1 - Funding Information: The authors gratefully acknowledge Brazilian agencies CNPq, CAPES and FAPESP for financial support. C.S. thanks CAPES (IEL Nacional—Brazil) for the fellowship.

PY - 2008/7

Y1 - 2008/7

N2 - In this work, we report a part of a systematic study of the influence of the synthesis routes on the properties of polycrystalline samples of PrxY1-xBa2Cu3 O7-δ. We have prepared high-quality samples of this material by following a sol-gel method, associated with heat treatment in both an inert argon and an oxygen atmospheres in order to compare their influence on the formation of the superconducting phase. Magnetic measurement (AC susceptibility) show that the superconducting transition temperature (TC) increases in samples prepared in argon when compared to those prepared in oxygen, for the same composition and Pr fraction less than 0.5. In addition to this, preliminary results of AC and DC magnetic susceptibility show superconductivity for samples with Pr fraction higher than 0.5 (and up to 0.9) prepared under argon flux, which may indicate the existence of stable superconductivity for all compositions, including pure Pr-123.

AB - In this work, we report a part of a systematic study of the influence of the synthesis routes on the properties of polycrystalline samples of PrxY1-xBa2Cu3 O7-δ. We have prepared high-quality samples of this material by following a sol-gel method, associated with heat treatment in both an inert argon and an oxygen atmospheres in order to compare their influence on the formation of the superconducting phase. Magnetic measurement (AC susceptibility) show that the superconducting transition temperature (TC) increases in samples prepared in argon when compared to those prepared in oxygen, for the same composition and Pr fraction less than 0.5. In addition to this, preliminary results of AC and DC magnetic susceptibility show superconductivity for samples with Pr fraction higher than 0.5 (and up to 0.9) prepared under argon flux, which may indicate the existence of stable superconductivity for all compositions, including pure Pr-123.

KW - PrBaCuO

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