Epitaxial growth of YBa2Cu3O7 films onto LaAlO3 (100) by using oxalates

A. Bustamante Dominguez; L. León Felix; J. Garcia; J. Flores Santibañez; L. De Los Santos Valladares; J. C. Gonzalez; A. Osorio Anaya; M. Pillaca

doi:10.1016/j.phpro.2012.06.078

Epitaxial growth of YBa₂Cu₃O₇ films onto LaAlO₃ (100) by using oxalates

A. Bustamante Dominguez, L. León Felix, J. Garcia, J. Flores Santibañez, L. De Los Santos Valladares, J. C. Gonzalez, A. Osorio Anaya, M. Pillaca

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

Due to the current necessity to obtain epitaxial superconductor films at low cost, we report the growth of YBa₂Cu₃O₇ (Y123) films by chemical deposition. The procedure involved simple steps such as precipitation of stoichiometric amounts of yttrium, barium and copper acetates in oxalic acid (H2C2O4). The precursor solution was dripped onto LaAlO₃ (100) substrates with the help of a Fisher pipette. The films were annealed in oxygen atmosphere during 12 h at three different temperatures: 820 °C, 840 °C and 860 °C. After 820 °C and 860 °C annealing, X-ray diffraction (XRD) analysis revealed high intensity of the (00l) reflections denoting that most of the Y123 grains were c-axis oriented. In addition, we also observed a-axis oriented grains ((h00) reflexion), minor randomly oriented grains and other phases (such as Y₂BaCuO₅ and CuO). In contrast, the sample treated at 840 °C, we noticed c - And a-axis oriented grains, very small amounts of randomly oriented grains without formation of other phases. From the magnetization versus temperature measurements, the critical temperatures were estimated at 70K and 90K for the samples annealed at 820 °C and 860 °C respectively.

Original language	English
Pages (from-to)	526-531
Number of pages	6
Journal	Physics Procedia
Volume	36
DOIs	https://doi.org/10.1016/j.phpro.2012.06.078
State	Published - 2012
Externally published	Yes
Event	Superconductivity Centennial Conference, SCC 2011 - The Hague, Netherlands Duration: 18 Sep 2011 → 23 Sep 2011

Bibliographical note

Funding Information:
ABD is grateful to CSI-VRI-UNMSM for funding the project No 101301071. The work in Cambridge was supported by the European Union program ALBAN (Contract No. E06D101257PE) and the Cambridge overseas Thrust. The work in Japan was supported by the Japan Society for the Promotion of Science (JSPS contract Nº PE10027). J.C. Gonzalez thanks to CSIC for his JAE-Doc contract (2009-2012) at the ICMSE-CSIC-US (Spain), and to the Consejería de Economía, Innovación y Ciencia of the Junta de Andalucía (Project FQM-6900) for financial support. The authors are indebted to Dr. D. W. Lee from the Nanyang Technological University (Singapore) for his helpful discussions.

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title = "Epitaxial growth of YBa2Cu3O7 films onto LaAlO3 (100) by using oxalates",

abstract = "Due to the current necessity to obtain epitaxial superconductor films at low cost, we report the growth of YBa2Cu3O7 (Y123) films by chemical deposition. The procedure involved simple steps such as precipitation of stoichiometric amounts of yttrium, barium and copper acetates in oxalic acid (H2C2O4). The precursor solution was dripped onto LaAlO3 (100) substrates with the help of a Fisher pipette. The films were annealed in oxygen atmosphere during 12 h at three different temperatures: 820 °C, 840 °C and 860 °C. After 820 °C and 860 °C annealing, X-ray diffraction (XRD) analysis revealed high intensity of the (00l) reflections denoting that most of the Y123 grains were c-axis oriented. In addition, we also observed a-axis oriented grains ((h00) reflexion), minor randomly oriented grains and other phases (such as Y2BaCuO5 and CuO). In contrast, the sample treated at 840 °C, we noticed c - And a-axis oriented grains, very small amounts of randomly oriented grains without formation of other phases. From the magnetization versus temperature measurements, the critical temperatures were estimated at 70K and 90K for the samples annealed at 820 °C and 860 °C respectively.",

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note = "Publisher Copyright: {\textcopyright} 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Guest Editors. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.; Superconductivity Centennial Conference, SCC 2011 ; Conference date: 18-09-2011 Through 23-09-2011",

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AU - Dominguez, A. Bustamante

AU - Felix, L. León

AU - Garcia, J.

AU - Santibañez, J. Flores

AU - De Los Santos Valladares, L.

AU - Gonzalez, J. C.

AU - Anaya, A. Osorio

AU - Pillaca, M.

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AB - Due to the current necessity to obtain epitaxial superconductor films at low cost, we report the growth of YBa2Cu3O7 (Y123) films by chemical deposition. The procedure involved simple steps such as precipitation of stoichiometric amounts of yttrium, barium and copper acetates in oxalic acid (H2C2O4). The precursor solution was dripped onto LaAlO3 (100) substrates with the help of a Fisher pipette. The films were annealed in oxygen atmosphere during 12 h at three different temperatures: 820 °C, 840 °C and 860 °C. After 820 °C and 860 °C annealing, X-ray diffraction (XRD) analysis revealed high intensity of the (00l) reflections denoting that most of the Y123 grains were c-axis oriented. In addition, we also observed a-axis oriented grains ((h00) reflexion), minor randomly oriented grains and other phases (such as Y2BaCuO5 and CuO). In contrast, the sample treated at 840 °C, we noticed c - And a-axis oriented grains, very small amounts of randomly oriented grains without formation of other phases. From the magnetization versus temperature measurements, the critical temperatures were estimated at 70K and 90K for the samples annealed at 820 °C and 860 °C respectively.

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Epitaxial growth of YBa₂Cu₃O₇ films onto LaAlO₃ (100) by using oxalates

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