Initial stages of EuBa2Cu3O7 thin film deposited on a ZnO semiconductor

✍ Scribed by Y. Ota; Y. Kimura; O. Michikami

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 336 KB
• Volume: 463-465
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2007.02.039

✦ Synopsis

ZnO thin films were deposited on R-Al 2 O 3 substrates by reactive RF magnetron sputtering in an Ar + O 2 mixture using a Zn metal target at a substrate temperature of 300 °C. ZnO thin films deposited on R-Al 2 O 3 substrates showed (1 1 0) orientation. C-axis-oriented EuBCO thin films were grown by DC magnetron sputtering directly on the ZnO thin film. The EuBCO thin films exhibited low critical temperatures (T ce ). SrTiO 3 insulating layers were deposited on the ZnO (1 1 0) thin films. The SrTiO 3 insulating layers showed only (1 0 0) orientation. The c-axis-oriented EuBCO thin films deposited on the SrTiO 3 layer exhibited T ce of 81.8 K and superconducting characteristics were drastically improved.