Growth and characterization of highly epitaxial YBa2Cu3O7/La0.7Ca0.3MnO3 bilayer structures

✍ Scribed by A. De Santis; F. Bobba; M.A. Boffa; R. Caciuffo; P. Mengucci; M. Salvato; A. Vecchione; A.M. Cucolo

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 264 KB
• Volume: 408-410
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2004.02.036

✦ Synopsis

We report on the preparation and structural characterization of YBa 2 Cu 3 O 7 /La 0:7 Ca 0:3 MnO 3 and La 0:7 Ca 0:3 MnO 3 / YBa 2 Cu 3 O 7 bilayers onto (1 0 0) SrTiO 3 substrates. The samples have been fabricated by sequential dc sputtering processes in high oxygen pressure starting from stochiometric targets. The critical temperature of the YBa 2 Cu 3 O 7 single layer was T c ðq ¼ 0Þ ¼ 91 K and the metal-insulator transition temperature (T MI ) of the manganite single layer was T MI ¼ 135 K. The structural characterization of the bilayers has been performed by X-ray diffraction analysis revealing highly epitaxial heterostructure with well defined interface for both kind of samples.