Processing and characterization of LaMnO3-buffered layer on IBAD-MgO template

• Published in: Physica. C, Superconductivity Vol. 468; no. 15-20; pp. 1597 - 1600
• Main Authors: KO, K. P, SHIN, G. M, KO, R. K, MOON, S. H, OH, S. S, YOO, S. I
• Format: Conference Proceeding Journal Article
• Language: English
• Published: Amsterdam Elsevier Science 15-09-2008
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Physics; Superconducting films and low-dimensional structures; Superconductivity; Buffer layer; Thickness; 74.78.Bz; 84.71.Mn; Coated conductor; IBAD-MgO LaMnO3 (LMO); A-15 compounds; Ion beam assisted deposition method; Texture; Deposition process; 81.15.-z
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2008.05.081

Using two different IBAD-MgO templates with the in-plane textures of 8.5 deg and 6.5 deg for MgO (2 2 0), respectively, we tried to identify the correlation between the LaMnO3 (LMO) buffer layer and IBAD-MgO template and also to optimize the PLD processing conditions for the LMO layer. Better in-plane texture of the LMO buffer layer less than 7 deg was obtained from the IBAD-MgO template of 6.5 deg in-plane texture over almost all deposition temperature and time, supporting that the processing window is very wide, although the in-plane texture of LMO buffer layers was somewhat sensitive not only to deposition temperature but also to deposition time (or layer thickness). Optimally processed LMO buffer layer at deposition temperature of 775 deg C in PO2 of 100 mTorr for 10 min exhibited the Deltaphi value of 5.2 deg .