Structural study of epitaxial NdBa2Cu3O7-x films by laser chemical vapor deposition

Rong Tu, Kaidong Wang, Ting Wang, Meijun Yang, Qizhong Li, Song Zhang, Lianmeng Zhang, Takashi Goto, Ji Shi, Hitoshi Ohmori

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1 Citation (Scopus)

Abstract

Epitaxial NdBa2Cu3O7-x films were prepared on (100) LaAlO3 single crystal substrates by laser chemical vapor deposition (laser CVD). The effect of deposition temperature on preferred orientation, crystallinity, microstructure, deposition rate of films was investigated. The preferred orientation of the NdBCO films changed from a, c-axis to c-axis, then back to a, c-axis, as the deposition temperature was increased from 993 to 1093 K. The highly c-axis-oriented epitaxial NdBa2Cu3O7-x film with critical transition temperature of 87 K was obtained at Tdep = 1033 K, with the in-plane epitaxial orientation relationship of NdBCO [100]∥LAO [010] and NdBCO [010]∥LAO [001]. The growth orientation varied from a-axis to c-axis as the film thickness increased in the case of the a, c-co-oriented NdBCO film. The contribution of thickness-dependent strain relaxation to preferred orientation of the NdBCO films was also discussed.

Original languageEnglish
Pages (from-to)19811-19817
Number of pages7
JournalRSC Advances
Volume8
Issue number35
DOIs
Publication statusPublished - 2018 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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    Tu, R., Wang, K., Wang, T., Yang, M., Li, Q., Zhang, S., Zhang, L., Goto, T., Shi, J., & Ohmori, H. (2018). Structural study of epitaxial NdBa2Cu3O7-x films by laser chemical vapor deposition. RSC Advances, 8(35), 19811-19817. https://doi.org/10.1039/c8ra02758g