The effect of pressure on phase selection during nucleation in undercooled bismuth

Wooyoung Yoon, J. S. Paik, D. Lacourt, J. H. Perepezko

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

At a sufficiently large liquid undercooling, the solidification of fine Bi droplet samples at ambient pressure yields a metastable phase instead of the stable structure. The metastable Bi phase is observed to melt at 174°C at ambient pressure. Thermal analysis measurements on droplet samples subjected to hydrostatic pressures ranging up to 400 MPa demonstrate that the melting temperature of the metastable Bi phase increases by 20.8 K/GPa with pressure, while that of the stable Bi phase decreases by 38.8 K/GPa. The trend of the measured melting temperature of the metastable Bi phase joins smoothly to the melting curve of the Bi(II) high-pressure phase. Differential scanning-calorimetry measurements on a liquid Bi droplet sample at undercoolings up to 220°C support the identification of the metastable Bi phase as the Bi(II) high-pressure phase with a heat of fusion 5.98 kJ/g-at. A shift of the nucleation temperature under pressure, which follows the trend of the melting temperature, characterizes the nucleation onset of both Bi(I) and Bi(II) phases and provides information on the kinetic competition controlling phase selection.

Original languageEnglish
Pages (from-to)3489-3494
Number of pages6
JournalJournal of Applied Physics
Volume60
Issue number10
DOIs
Publication statusPublished - 1986 Dec 1
Externally publishedYes

Fingerprint

bismuth
melting
nucleation
supercooling
trends
heat of fusion
temperature
liquids
hydrostatic pressure
solidification
thermal analysis
heat measurement
scanning
shift
kinetics
curves

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

The effect of pressure on phase selection during nucleation in undercooled bismuth. / Yoon, Wooyoung; Paik, J. S.; Lacourt, D.; Perepezko, J. H.

In: Journal of Applied Physics, Vol. 60, No. 10, 01.12.1986, p. 3489-3494.

Research output: Contribution to journalArticle

Yoon, Wooyoung ; Paik, J. S. ; Lacourt, D. ; Perepezko, J. H. / The effect of pressure on phase selection during nucleation in undercooled bismuth. In: Journal of Applied Physics. 1986 ; Vol. 60, No. 10. pp. 3489-3494.
@article{3cfff35f5fb74cad9ae6060fe9cb2c87,
title = "The effect of pressure on phase selection during nucleation in undercooled bismuth",
abstract = "At a sufficiently large liquid undercooling, the solidification of fine Bi droplet samples at ambient pressure yields a metastable phase instead of the stable structure. The metastable Bi phase is observed to melt at 174°C at ambient pressure. Thermal analysis measurements on droplet samples subjected to hydrostatic pressures ranging up to 400 MPa demonstrate that the melting temperature of the metastable Bi phase increases by 20.8 K/GPa with pressure, while that of the stable Bi phase decreases by 38.8 K/GPa. The trend of the measured melting temperature of the metastable Bi phase joins smoothly to the melting curve of the Bi(II) high-pressure phase. Differential scanning-calorimetry measurements on a liquid Bi droplet sample at undercoolings up to 220°C support the identification of the metastable Bi phase as the Bi(II) high-pressure phase with a heat of fusion 5.98 kJ/g-at. A shift of the nucleation temperature under pressure, which follows the trend of the melting temperature, characterizes the nucleation onset of both Bi(I) and Bi(II) phases and provides information on the kinetic competition controlling phase selection.",
author = "Wooyoung Yoon and Paik, {J. S.} and D. Lacourt and Perepezko, {J. H.}",
year = "1986",
month = "12",
day = "1",
doi = "10.1063/1.337599",
language = "English",
volume = "60",
pages = "3489--3494",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "10",

}

TY - JOUR

T1 - The effect of pressure on phase selection during nucleation in undercooled bismuth

AU - Yoon, Wooyoung

AU - Paik, J. S.

AU - Lacourt, D.

AU - Perepezko, J. H.

PY - 1986/12/1

Y1 - 1986/12/1

N2 - At a sufficiently large liquid undercooling, the solidification of fine Bi droplet samples at ambient pressure yields a metastable phase instead of the stable structure. The metastable Bi phase is observed to melt at 174°C at ambient pressure. Thermal analysis measurements on droplet samples subjected to hydrostatic pressures ranging up to 400 MPa demonstrate that the melting temperature of the metastable Bi phase increases by 20.8 K/GPa with pressure, while that of the stable Bi phase decreases by 38.8 K/GPa. The trend of the measured melting temperature of the metastable Bi phase joins smoothly to the melting curve of the Bi(II) high-pressure phase. Differential scanning-calorimetry measurements on a liquid Bi droplet sample at undercoolings up to 220°C support the identification of the metastable Bi phase as the Bi(II) high-pressure phase with a heat of fusion 5.98 kJ/g-at. A shift of the nucleation temperature under pressure, which follows the trend of the melting temperature, characterizes the nucleation onset of both Bi(I) and Bi(II) phases and provides information on the kinetic competition controlling phase selection.

AB - At a sufficiently large liquid undercooling, the solidification of fine Bi droplet samples at ambient pressure yields a metastable phase instead of the stable structure. The metastable Bi phase is observed to melt at 174°C at ambient pressure. Thermal analysis measurements on droplet samples subjected to hydrostatic pressures ranging up to 400 MPa demonstrate that the melting temperature of the metastable Bi phase increases by 20.8 K/GPa with pressure, while that of the stable Bi phase decreases by 38.8 K/GPa. The trend of the measured melting temperature of the metastable Bi phase joins smoothly to the melting curve of the Bi(II) high-pressure phase. Differential scanning-calorimetry measurements on a liquid Bi droplet sample at undercoolings up to 220°C support the identification of the metastable Bi phase as the Bi(II) high-pressure phase with a heat of fusion 5.98 kJ/g-at. A shift of the nucleation temperature under pressure, which follows the trend of the melting temperature, characterizes the nucleation onset of both Bi(I) and Bi(II) phases and provides information on the kinetic competition controlling phase selection.

UR - http://www.scopus.com/inward/record.url?scp=0000323812&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000323812&partnerID=8YFLogxK

U2 - 10.1063/1.337599

DO - 10.1063/1.337599

M3 - Article

VL - 60

SP - 3489

EP - 3494

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 10

ER -