Synthesis and characterization of single crystalline REBa2Cu3O7-y thin film grown by tri-phase epitaxy

Kyung Sung Yun, Yuji Matsumoto, Shunichi Arisawa, Yoshihiko Takano, Akira Ishii, Takeshi Hatano, Kazumasa Togano, Masashi Kawasaki, Hideomi Koinuma

Research output: Contribution to journalConference articlepeer-review


We report on the successful fabrication of single crystalline thin films of REBa2Cu3O7-y (RE123, RE: rare earth elements) using a novel process of Tri-Phase Epitaxy. This method is based on the application of pulsed laser deposition (PLD) under appropriate compositions and conditions predetermined from the relevant thermodynamic phase diagram. Prior to the growth of the film, a liquid phase film (near-eutectic composition of BaO-CuO) is intentionally formed. The RE123 single crystalline thin film is grown at the liquid-solid interface. The consumed RE123 in the liquid layer is compensated by the laser-ablated vapor and the composition of the liquid phase is kept constant. Thermodynamic equilibrium can be maintained at the liquid-solid film boundary while preserving the benefit of intrinsic stoichiometry control offered by the PLD technique. Atomically smooth film surface and single crystalline nature of film was verified by combined characterization methods of x-ray diffraction, atomic force microscopy and transmission electron microscopy.

Original languageEnglish
Pages (from-to)2813-2816
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 III
Publication statusPublished - 2003 Jun
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: 2002 Aug 42002 Aug 9


  • REBaCuO
  • Single crystalline thin film
  • Triphase epitaxy


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