Preparation of Epitaxial YbBa2Cu3O7-δ on SrTiO3 Single Crystal Substrates Using a Solution Process

Autor:	T. G. Chirayil, Ichiro Matsubara, Donald M. Kroeger, David K. Christen, Mariappan Parans Paranthaman, Patrick M Martin, Ellen Y. Sun, Darren Verebelyi
Rok vydání:	1999
Předmět:	Ytterbium Materials science Annealing (metallurgy) General Engineering Analytical chemistry General Physics and Astronomy chemistry.chemical_element Barium Epitaxy Copper Crystallography chemistry.chemical_compound chemistry Pyridine Single crystal Dissolution
Zdroj:	Japanese Journal of Applied Physics. 38:L727
ISSN:	1347-4065 0021-4922
Popis:	We have prepared YbBa2Cu3O7-δ (Yb-123) epitaxial films on SrTiO3 (100) single crystal substrates by a metal organic decomposition (MOD) method. Precursor solution was prepared by dissolving ytterbium acetylacetonate, barium neodecanoate, and copper (II) 2-ethylhexanoate in a mixture of solvents containing toluene/pyridine/propionic acid. The precursor solutions were spin coated on the substrates and fired at 730–770°C in 100-ppm oxygen atmospheres followed by 1 atm O2 annealing. X-ray diffraction results from the theta-2theta, phi, and omega scans for the films revealed a (100) cubic texture. The full-width-at-half-maximum values for Yb-123 (103) and Yb-123 (005) were 1.5° (in-plane epitaxy, Δφ) and 0.73° (out-of-plane epitaxy, Δω), respectively. The highest T c obtained for Yb-123 films was 87.2 K. The measured transport J c was 6.4×105 A/cm2 at 77 K and self-field.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1691ef0f6589740397bf14df2839a44e https://doi.org/10.1143/jjap.38.l727 Zobrazit plný text záznamu