Small-Angle Neutron Scattering Study of Metallic Sodium on Phase Transition

Hiroshi Abe, Ryuji J. Matsuo, Mikio Ishibashi, Ken Ichi Ohshima, Masayuki Imai, Kazuhisa Kakurai

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

In metallic sodium, a characteristic waiting time, which is the incubation time until phase transition starts, appears above Ms at a fixed temperature. Small-angle neutron scattering from clusters of the low-temperature phase is observed, which shows good agreement with the aggregation-of-spheres model, whose radius distribution is a Maxwell distribution function. Using the aggregation-of-spheres model, the average radius, r0, of clusters of the low-temperature phase was found to be 57.2 Å. Moreover, abnormal small-angle neutron scattering from local fluctuations is seen during the waiting time, where this waiting time is related to the nucleation process in the martensitic phase transition.

Original languageEnglish
Pages (from-to)1860-1863
Number of pages4
Journaljournal of the physical society of japan
Volume66
Issue number7
DOIs
Publication statusPublished - 1997 Jan 1
Externally publishedYes

Keywords

  • Dynamic embryo
  • Incubation time
  • Kinetics
  • Martensitic phase transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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