Polymer solution processing of (Bi, Pb)SrCaCuO

Fuente, G.F. de la; Sotelo, A.; Huang, Yibing; Ruiz, María Luisa Bernal; Badı́a, A.; Angurel, L.A.; Lera, F.; Navarro, Rafael; Rillo, C.; Ibáñez, Rafael; Beltrán, Daniel; Sapiña, Fernando; Beltrán, Antonio

doi:10.1016/0921-4534(91)92057-i

Cited by 37 publications

(21 citation statements)

References 4 publications

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“…Bi 2 Sr 2 Ca 1 Cu 2 O y target has been prepared by using a polymer matrix route described in detail [21][22][23]. Bi(CH 3 COO) 3 (Z99.99%, Aldrich), Sr(CH 3 COO) 2 Á 0.5H 2 O (99%, Panreac), Ca (CH 3 COO) 2 Á 2H 2 O (98%, Alfa Aesar) and Cu(CH 3 COO) 2 Á H 2 O (98%, Panreac) commercial powders were used as starting materials.…”

Section: Methodsmentioning

confidence: 99%

The effects of the post-annealing time on the growth mechanism of Bi2Sr2Ca1Cu2O8+∂ thin films produced on MgO (100) single crystal substrates by pulsed laser deposition (PLD)

Nane

Özçelık

Abukay

2016

Ceramics International

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Bi 2 Sr 2 Ca 1 Cu 2 O 8 þ ∂ thin films were deposited on MgO (100) substrates by pulsed laser deposition (PLD). The effects of post-annealing time on the phase formation, the structural and superconducting properties of the films have been investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), temperature dependent resistivity (R-T), atomic force microscopy (AFM), and DC magnetization measurements. The films deposited at 600 1C were post-annealed in an atmosphere of a gas mixture of Ar (93%) and O 2 (7%), at 860 1C for 10, 30, and 60 min. All films have demonstrated a mainly single phase of 2212 with a high crystallinity (FWHM E 0.1591) and c-axis oriented. The critical temperature, T C , of the films annealed for 10, 30, and 60 min were obtained as 77, 78, and 78 K, respectively. The highest critical current density, J C , was calculated as 3.34 Â 10 7 A/cm 2 for the film annealed at 860 1C for 30 min at 10 K.

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Section: Methodsmentioning

confidence: 99%

The effects of the post-annealing time on the growth mechanism of Bi2Sr2Ca1Cu2O8+∂ thin films produced on MgO (100) single crystal substrates by pulsed laser deposition (PLD)

Nane

Özçelık

Abukay

2016

Ceramics International

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“…Bi 2 Sr 2 Ca 1-x Na x Cu 2 O y samples, with x =0, 0.05, 0.075, 0.1, 0.15, and 0.20 have been prepared, by using a polymer matrix route described in detail elsewhere [15,46]. Bi(CH 3 COO) 3 (≥99.99%, Aldrich), Sr(CH 3 COO) 2 •0.5H 2 O (99%, Panreac), Ca(CH 3 COO) 2 •2H 2 O (98%, Alfa Aesar), Cu(CH 3 COO) 2 •H 2 O (98%, Panreac) and Na(CH 3 COO) (99%, Alfa Aesar) commercial powders were used as starting materials.…”

Section: Methodsmentioning

confidence: 99%

“…Since the discovery of Bi-based high-temperature superconductors [1], which are among the most promising materials for technological and industrial applications, many experimental studies have been performed [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] in order to improve their critical temperature (Tc), critical current density (Jc), and better understand the structural properties of the system. The BSCCO families can be described by the Bi 2 Sr 2 Ca n-1 Cu n O 2n+4+y general formula, where n=1, 2 and 3.…”

Section: Introductionmentioning

confidence: 99%

Improvement of superconducting properties in Na-doped BSCCO superconductor

Özçelık

Gürsul

Sotelo

et al. 2014

J Mater Sci: Mater Electron

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In this study, the effect of Na substitution on the structural, electrical and magnetic properties of Bi 2 Sr 2 Ca 1-x Na x Cu 2 O 8+y superconductor with x=0.0, 0.05, 0.075, 0.1, 0.15, and 0.2 has been investigated. The effects of partial replacement of Na for Ca have been investigated by electrical resistivity (ρ-T), scanning electron microscopy (SEM), X-ray diffraction (XRD), and magnetic characterizations. XRD results have shown that the Bi-(2212) phase is the major one independently of the Na-concentration. SEM results indicate that the microstructure of samples is improved with increasing of Na-contents. From the electrical resistivity measurements it has been found that Tc is slightly higher than 92 K for Na-concentrations up to 0.20. Moreover, this trend is maintained in the magnetic measurements where the hysteresis loops are increased with increasing Na-concentrations. The maximum calculated Jc, using Bean's model, is around 10*10 6 A/cm 2 at 10 K and ∼ 1000 Oe for the 0.075 Na doped samples.

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“…The aim of this work is developing reproducible preparation methods that yield optimum quality Bi 2 Sr 2 Co 1.8 O x powders for using as bulk ceramics or as precursors for textured materials. It is presented a comparison between three different synthetic methods, the conventional solid-state synthesis, a sol-gel method and a versatile polymer solution synthesis route developed in our laboratory [11,12] for other layered ceramics.…”

Section: Introductionmentioning

confidence: 99%

Mejora de las propiedades termoeléctricas de Bi2Sr2Co1.8Ox por métodos de síntesis en disolución

Torres¹,

Sotelo²,

Rasekh³

et al. 2012

Bol. Soc. Esp. Ceram. Vidr.

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Several solution synthetic methods, sol-gel and a polymeric route, have been studied in order to obtain Bi 2 Sr 2 Co 1.8 O x ceramics with improved thermoelectric properties, compared to the classical solid state reaction. The products obtained by these different methods have been compared using DTA-TGA, powder X-ray diffraction, scanning electron microscopy, and thermoelectric characterizations. All the samples obtained by solution synthesis show higher homogeneity and lower content of secondary phases. The main differences in thermoelectrical properties are due to the decrease of electrical resistivity in samples obtained by solution methods, compared with the solid state obtained samples. Between them, the decrease is especially high for those samples prepared by the polymer solution method. Therefore, the polymeric solution synthesis route is shown to yield a power factor four times higher than the obtained for the solid state and sol-gel methods at room temperature.Keywords: Processing, Electrical properties, Microstructure, Thermopower, Cobaltites. Mejora de las propiedades termoeléctricas de Bi 2 Sr 2 Co 1.8 O x por métodos de síntesis en disoluciónSe han obtenido cerámicas termoeléctricas Bi 2 Sr 2 Co 1.8 O x utilizando varios métodos de síntesis, el clásico por estado sólido, sol-gel y de matriz polimérica. Se han comparado los productos obtenidos por las diferentes vías a través de técnicas de DTA-TGA, difracción de rayos X en polvo, microscopía electrónica de barrido y de caracterización termoeléctrica. Todas las muestras obtenidas por los métodos en disolución poseen una mayor homogeneidad y menor contenido de fases secundarias. La principal diferencia en las propiedades termoeléctricas es debida a la disminución de la resistividad eléctrica en las muestras obtenidas por medio de métodos en disolución, comparado con las que se obtienen por estado sólido. Entre ellas, la reducción de la resistividad es mucho mayor para las que se obtienen por el método de matriz polimérica. Además, los materiales obtenidos por este último método poseen un factor de potencia, a temperatura ambiente, cuatro veces mayor que el obtenido en las sintetizadas por los otros dos métodos estudiados.

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Polymer solution processing of (Bi, Pb)SrCaCuO

Cited by 37 publications

References 4 publications

The effects of the post-annealing time on the growth mechanism of Bi2Sr2Ca1Cu2O8+∂ thin films produced on MgO (100) single crystal substrates by pulsed laser deposition (PLD)

The effects of the post-annealing time on the growth mechanism of Bi2Sr2Ca1Cu2O8+∂ thin films produced on MgO (100) single crystal substrates by pulsed laser deposition (PLD)

Improvement of superconducting properties in Na-doped BSCCO superconductor

Mejora de las propiedades termoeléctricas de Bi<sub>2</sub>Sr<sub>2</sub>Co<sub>1.8</sub>O<sub>x</sub> por métodos de síntesis en disolución

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