Electrophoretic deposition of textured YBa2Cu3O7−<i>x</i> films on silver substrates

Hein, Matthias; Müller, Günter; Piel, H.; Ponto, L.; Becks, M.; Klein, U.; Peiniger, M.

doi:10.1063/1.343620

Cited by 61 publications

(11 citation statements)

References 12 publications

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“…Rao et al [16] used the technique to fabricate magnesia ceramics, and high T~ superconductors thick films have been grown by EPD [17][18][19][20][21][22][23]. To utilize the anisotropic transport properties of the high T~ superconductors, Hein et al [20] produced textured YBazCu3Ox films electrophoretically with a magnetic field applied perpendicular to the deposition surface. Sarkar and Nicholson [22,23] synthesized textured thick films of BiSrCaCuO and YBa/Cu30 x superconductors by EPD using high aspect ratio powder.…”

Section: Electrophoretic Depositionmentioning

confidence: 99%

Electrophoretic deposition and its use to synthesize ZrO2/Al2O3 micro-laminate ceramic/ceramic composites

1993

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Electrophoretic deposition has been employed to synthesize yttria-stabilized zirconia (YSZ)/alumina, laminar microcomposites with a total of 80 layers, > 2 mm. 10 wt% solids, ethanol suspensions of YSZ or AI203 powders were deposited layer by layer. The deposited samples had a green density, ~ 60% theoretical. The deposition process was characterized by the rate-of-deposition as a function of voltage and the microstructure of the sintered, theoretically dense samples was characterized by optical and electron microscopy. Microindentation was used to explore the mechanical properties of the laminates.

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Section: Electrophoretic Depositionmentioning

confidence: 99%

Electrophoretic deposition and its use to synthesize ZrO2/Al2O3 micro-laminate ceramic/ceramic composites

1993

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“…3334 The cavity is 5 cm in diameter and 5 cm high with a gap of approximately 0.5 cm and is resonant at the hydrogen hyperefine transition frequency 1.420405 GHz. 35 The electrodes are silver that has been coated electrophoretically 36 with YBa2Cu307_5. To eliminate radiation loss, the resonator is enclosed in a cylindrical shield.…”

Section: Split-ring Resonatorsmentioning

confidence: 99%

Waveguides and Cavity Resonators

Portis¹

1993

World Scientific Lecture Notes in Physics

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“…In * To whom correspondence should be addressed recent years electrophoretic deposition of high To superconductors has been studied intensively [3][4][5][6][7][8][9][10][11]. This technique has the advantage of producing economically uniform and dense coatings with controllable thickness on various substrates with different shapes and sizes and can easily be adapted to large area and continuous fabrication [12].…”

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confidence: 99%

Optimization of the electrophoretic deposition of YBa2Cu3O7?x superconducting large area coatings

et al. 1998

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Abstract. Large area coatings (>10cm 2) of the high temperature superconductor YBa2Cu307-x (x = 0.1 -0.2) (YBCO) have been prepared by scale up an electrophoretic deposition technique using silver sheets and Si-wafers coated with Ag or Au as substrates. Several parameters, like the kind of the solvent, the applied voltage, the distance between the electrodes, the initial concentration of the suspension and the temperature during the electrophoresis were investigated in order to attain high deposition rates, as well as uniform YBCO coatings with the proper stoichiometry. To obtain a strongly adherent and dense coating a subsequent appropriate sintering and annealing procedure has been developed. The coatings obtained were characterized for their stoichiometry and superconducting properties by X-ray diffraction (XRD), Raman spectroscopy and magnetic measurements. The homogeneity and thickness of the films and the average grain size of the deposited particles have been investigated by optical and scanning electron microscopy (SEM).Key words: YBa2Cu3OT-high temperature superconductor, large area coatings, electrophoretic deposition, Raman spectroscopy, magnetic susceptibility.Applications of To-superconducting coatings for passive microwave devices and shielding of magnetic fields require the development of reproducible processes for the deposition of high temperature superconductors (HTS) on large area substrates [1][2]. In * To whom correspondence should be addressed recent years electrophoretic deposition of high To superconductors has been studied intensively [3][4][5][6][7][8][9][10][11]. This technique has the advantage of producing economically uniform and dense coatings with controllable thickness on various substrates with different shapes and sizes and can easily be adapted to large area and continuous fabrication [12].The optimization and scale up an of earlier developed electrophoretic deposition technique [13][14] is investigated in this paper and is applied to large area substrates of several cm 2. Different parameters affecting the electrophoretic velocity have been investigated in detail in order to increase the deposition rate, the uniformity and density of the coatings, keeping the correct stoichiometry of YBa2Cu3OT-x(X=0.1-0.2) (YBCO). The electrophoretic deposition technique used in the fabrication of YBCO coatings requires conductive substrates in order to be useful as electrodes, not reactive with YBCO, having a smooth surface for the good adherence of the superconducting powder, similar thermal expansion as the coating in order to avoid cracks in the thermal treatment and higher melting point than YBCO for the followed sintering process [151.The substrates tested in this work were Ag-sheets and plates and Si-wafers coated with thin films of Ag or Au (700-800 ~t), produced by the vapor deposition technique.To improve the homogeneity, adhesion and density of the electrophoretically deposited coatings an appropriate sintering and annealing procedure has

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Electrophoretic deposition of textured YBa2Cu3O7−x films on silver substrates

Cited by 61 publications

References 12 publications

Electrophoretic deposition and its use to synthesize ZrO2/Al2O3 micro-laminate ceramic/ceramic composites

Electrophoretic deposition and its use to synthesize ZrO2/Al2O3 micro-laminate ceramic/ceramic composites

Waveguides and Cavity Resonators

Optimization of the electrophoretic deposition of YBa2Cu3O7?x superconducting large area coatings

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