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Formation of textured YBCO films by laser ablation

Conference ·
OSTI ID:10157612
Yttrium - Barium - Copper - Oxide (YBCO) thin films are prepared using laser ablation. The <100> orientation of the 0.2--0.3 {mu}m thin film is controlled using both substrate temperature and deposited buffer layers for epitaxial growth. Highly textured films are prepared with a c-axis preferred orientation using substrates of SrTiO{sub 3} (100) and MgO (100) at a temperature of 780{degrees}C whereas a,b-axis films result if a 100nm buffer of Praseodymium-Barium-Copper-Oxide is first deposited at 700 C. The use of a 15nm buffer layer of SrTiO{sub 3} on MgO (100) produces films with superconducting transitions equivalent to those YBCO films deposited directly on SrTiO{sub 3} (100) substrates.
Research Organization:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
10157612
Report Number(s):
UCRL-JC--111025; CONF-921101--118; ON: DE93013131
Country of Publication:
United States
Language:
English