Numerical analysis of YBCO crystal growth in the TFA-MOD process

Sukeharu Nomoto, Ryo Teranishi, Tetsuji Honjo, Teruo Izumi, Yuh Shiohara

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Numerical analyses of YBa2Cu3O6.5+x (YBCO) polycrystalline film growth in the metal organic deposition (MOD) process using precursor solution containing metal trifluoroacetates (TFA) have been performed. This process is accompanied with both consuming H2O and releasing HF at the growth interface. At first, a one-dimensional numerical growth model of the YBCO was proposed in consideration of the growth kinetics at the interface between the precursor and the YBCO crystalline layers together with the conservation of the gas components, H2O and HF, in the precursor layer. This numerical model was treated as a boundary condition for the convective multi-component diffusion equations in the gas region. Subsequently, the convective multi-component diffusion equations and Navier-Stokes equation in the gas region were solved in a two-dimensional manner by the finite difference method. It was found that this numerical model calculation could make a good estimate for the growth rate distribution in the film and the molar fractions of the components in the gas region. Finally, it was confirmed that the supplied water vapor molar fraction dependence, the positional dependence and the inlet gas velocity dependence of the calculated YBCO growth rate were in good agreement with the experimental results.

Original languageEnglish
Pages (from-to)922-929
Number of pages8
JournalMaterials Transactions
Volume46
Issue number5
DOIs
Publication statusPublished - May 1 2005

Fingerprint

Trifluoroacetic Acid
Crystallization
Crystal growth
numerical analysis
Numerical analysis
crystal growth
Gases
Metals
metals
gases
Numerical models
Growth kinetics
Steam
Film growth
Finite difference method
Water vapor
Navier Stokes equations
releasing
Conservation
Navier-Stokes equation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Numerical analysis of YBCO crystal growth in the TFA-MOD process. / Nomoto, Sukeharu; Teranishi, Ryo; Honjo, Tetsuji; Izumi, Teruo; Shiohara, Yuh.

In: Materials Transactions, Vol. 46, No. 5, 01.05.2005, p. 922-929.

Research output: Contribution to journalArticle

Nomoto, Sukeharu ; Teranishi, Ryo ; Honjo, Tetsuji ; Izumi, Teruo ; Shiohara, Yuh. / Numerical analysis of YBCO crystal growth in the TFA-MOD process. In: Materials Transactions. 2005 ; Vol. 46, No. 5. pp. 922-929.
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