Growth behavior of YBCO films on STO substrates with ZnO nanorods



The influence of nanorods grown on substrate prior to YBCO deposition has been investigated. We studied the microstructures and characteristic of YBa2Cu3O7-δ films fabricated on SrTiO3 (100) substrates with ZnO nanorods as one of the possible pinning centers. The growth density of ZnO nanorods was modulated through Au nanoparticles synthesized on top of the STO(100) substrates with self assembled monolayer. The density of Au nanoparticles is approximately 240~260 μm-2 with diameters of 41~49 nm. ZnO nanorods were grown on Au nanoparticles by hot-walled PLD with Au nanoparticles. Typical size of ZnO nanorod was around 179 nm in diameter and 2~6 μm in length respectively. The ZnO nanorods have apparently randomly aligned and exhibit single-crystal nature along (0002) growth direction. Our preliminary results indicate that YBCO film deposited directly on STO substrate shows the c-axis orientation while YBCO films with ZnO nanorods exhibit any mixed phases without any typical crystal orientation.




  • Se-Kweon Oh 오세권. 충북대학교
  • Cho-Yeon Lee 이초연. 충북대학교
  • Gun-Eik Jang 장건익. 충북대학교
  • Kyoung-Won Kim 김경원. 한국과학기술연구원
  • Kim Ok-Bae Hyun 현옥배. 한국전력공사 전력연구원


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