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). Issue 5 (April 2016)

• Record Type: Journal Article
• Authors: Nane, O.; Özçelik, B.; Abukay, D.
• Is Part Of: Ceramics international. Volume 42: Issue 5 (2016)
• Page Start: 5778
• Page End: 5784
• Publication Date: 2016-04
• Subjects: C. Superconductivity -- Bi-2212 thin film -- Pulsed laser deposition (PLD) -- Post-annealing -- Critical current density; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.12.116
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Bi2 Sr2 Ca1 Cu2 O8+∂ 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 °C were post-annealed in an atmosphere of a gas mixture of Ar (93%) and O2 (7%), at 860 °C for 10, 30, and 60 min. All films have demonstrated a mainly single phase of 2212 with a high crystallinity (FWHM≈0.159°) 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 3.34×10 7 A/cm 2 for the film annealed at 860 °C for 30 min at 10 K.