The effects of the post-annealing temperature on the growth mechanism of Bi2Sr2Ca1Cu2O8+ ∂ thin films produced on MgO (1 0 0) single crystal substrates by pulsed laser deposition (PLD)


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Nane O., ÖZÇELİK B., Abukay D.

Journal of Alloys and Compounds, vol.566, pp.175-179, 2013 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 566
  • Publication Date: 2013
  • Doi Number: 10.1016/j.jallcom.2013.03.054
  • Journal Name: Journal of Alloys and Compounds
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.175-179
  • Keywords: Bi-2212 thin film, Critical current density, Magnetic hysteresis, Post-annealing, Pulsed laser deposition (PLD), Superconductivity
  • Hakkari University Affiliated: No

Abstract

The effects of post-annealing temperature were investigated on Bi 2Sr2Ca1Cu2O8+ ∂ thin films deposited on MgO (1 0 0) substrates by pulsed laser deposition (PLD). The structural and superconducting properties of the films have been determined by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), temperature dependent resistivity (R-T), and DC magnetization measurements. The films which were deposited at 600 C were post-annealed in an atmosphere of a gas mixture of Ar (93%) and O2 (7%), at temperature ranging between 800 and 880 C. This resulted in films which exhibited a single phase of 2212 with a high crystallinity (FWHM ≈ 0.16) and texturing along the c-axis, perpendicular to the plane of the substrate. An optimum temperature of 860 C was found for the post-annealing thermal treatment. The critical temperature, TC, of the films was measured as 82 K and the critical current density, JC, was calculated as 3 × 107 A/cm2 for the film annealed at 860 C. © 2013 Elsevier B.V. All rights reserved.