Growth and Characterization of BaZrO3 Buffer Layer for Textured YBCO Thin Films Growth on MgO (00l) Substrate

Abstract:

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Superconducting YBa2Cu3O7-δ(YBCO) films were grown on MgO single crystalline substrates using a BaZrO3 (BZO) buffer layer deposited by a pulsed laser deposition (PLD). Deposition condition has been optimized to obtain good epitaxial BZO film followed by deposition of YBCO superconducting films. The crystallinity and microstructure of epitaxial YBCO/ BZO/ MgO (00l) films were investigated by a two-dimensional x-ray diffraction and a field emission scanning electron microscope. The in-plane (φ-scan) measurements for the BZO films (200 ~ 500 nm thick) grown on MgO substrates revealed a narrow full width half maximum (0φ = 2o). The XRD results exhibited that YBCO films with a BZO buffer layer were well oriented in the [00l] direction perpendicular to the substrate surface. The BZO films also showed homogeneous and dense surface morphologies. By the deposition of a subsequent BZO buffer layer, YBCO was grown epitaxially on MgO with results showing a critical current density (Jc) of ~ 3.3 × 106 A/cm2 and a critical temperature (Tc) of 86 K.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

715-718

DOI:

10.4028/www.scientific.net/KEM.336-338.715

Citation:

J. K. Chung et al., "Growth and Characterization of BaZrO3 Buffer Layer for Textured YBCO Thin Films Growth on MgO (00l) Substrate", Key Engineering Materials, Vols. 336-338, pp. 715-718, 2007

Online since:

April 2007

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$35.00

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