In situ observation and analysis of faceted crystal growth process in REBCO superconductive oxide

N. Mori, Y. Nakahara, K. Ogi, Masashi Mukaida

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

To clarify the nucleation and growth process of 123 crystals, growth of faceted RE123 (REBa2Cu3O7-X, RE = Nd, Sm, Gd, Y) crystals was observed in situ on MgO(1 0 0) by using high temperature optical microscope with zoom lens. RE123 crystals nucleated and grew at each undercooling (ΔT = 13-50 K). Growth rate (u) and incubation time (tinc) for nucleation were obtained from the relationship between the position of faceted interface and time (t). u increased with increasing Δ Tr 2, where ΔTr = ΔT/Tp, Tp was peritectic temperature. Nucleation rate (Iv) was obtained from the relationship between the number of nucleated crystals (n) and time. Iv increased with increasing of exp (- B / Δ Tr 2), where B was a constant. Both u and Iv under a fixed ΔT increased with increasing Tp: u(Nd123) > u(Sm123) > u(Gd123) and Iv(Nd123) > Iv(Sm123) > Iv(Gd123) for Tp(Nd123) > Tp(Sm123) > Tp(Gd123) in Ar-1%O2 atmosphere.

Original languageEnglish
Pages (from-to)330-334
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - Oct 1 2007

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Crystallization
Crystal growth
Oxides
crystal growth
Nucleation
nucleation
Crystals
oxides
zoom lenses
crystals
Undercooling
supercooling
optical microscopes
Lenses
Microscopes
atmospheres
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

In situ observation and analysis of faceted crystal growth process in REBCO superconductive oxide. / Mori, N.; Nakahara, Y.; Ogi, K.; Mukaida, Masashi.

In: Physica C: Superconductivity and its Applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 330-334.

Research output: Contribution to journalArticle

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