Continuous melting and thermal-history-dependent freezing in the confined Na-K eutectic alloy

E. V. Charnaya, M. K. Lee, Cheng Tien, L. J. Chang, Z. J. Wu, Yu A. Kumzerov, A. S. Bugaev

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

23Na NMR studies of the Na-K eutectic alloy embedded into porous glass with 7-nm pores showed that melting of Na 2 K confined nanoparticles is a continuous process with smooth changes in the Knight shift of a narrow resonance line and nuclear spin relaxation between those in the crystalline and liquid states. The intermediate state, which occurs upon melting is stable and more favorable than the liquid state. The inverse freezing transformation can be sharp as at a first-order transition or continuous depending on the initial temperature of cooling. The results suggest revision of theoretical predictions for the melting and freezing transitions in confined geometry.

Original languageEnglish
Article number155401
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number15
DOIs
Publication statusPublished - 2013 Apr 3

Fingerprint

eutectic alloys
Freezing
Eutectics
freezing
Melting
melting
histories
nuclear magnetic resonance
Liquids
liquids
resonance lines
nuclear spin
Nuclear magnetic resonance
Nanoparticles
Crystalline materials
Cooling
porosity
cooling
Glass
nanoparticles

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "23Na NMR studies of the Na-K eutectic alloy embedded into porous glass with 7-nm pores showed that melting of Na 2 K confined nanoparticles is a continuous process with smooth changes in the Knight shift of a narrow resonance line and nuclear spin relaxation between those in the crystalline and liquid states. The intermediate state, which occurs upon melting is stable and more favorable than the liquid state. The inverse freezing transformation can be sharp as at a first-order transition or continuous depending on the initial temperature of cooling. The results suggest revision of theoretical predictions for the melting and freezing transitions in confined geometry.",
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Continuous melting and thermal-history-dependent freezing in the confined Na-K eutectic alloy. / Charnaya, E. V.; Lee, M. K.; Tien, Cheng; Chang, L. J.; Wu, Z. J.; Kumzerov, Yu A.; Bugaev, A. S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 87, No. 15, 155401, 03.04.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Continuous melting and thermal-history-dependent freezing in the confined Na-K eutectic alloy

AU - Charnaya, E. V.

AU - Lee, M. K.

AU - Tien, Cheng

AU - Chang, L. J.

AU - Wu, Z. J.

AU - Kumzerov, Yu A.

AU - Bugaev, A. S.

PY - 2013/4/3

Y1 - 2013/4/3

N2 - 23Na NMR studies of the Na-K eutectic alloy embedded into porous glass with 7-nm pores showed that melting of Na 2 K confined nanoparticles is a continuous process with smooth changes in the Knight shift of a narrow resonance line and nuclear spin relaxation between those in the crystalline and liquid states. The intermediate state, which occurs upon melting is stable and more favorable than the liquid state. The inverse freezing transformation can be sharp as at a first-order transition or continuous depending on the initial temperature of cooling. The results suggest revision of theoretical predictions for the melting and freezing transitions in confined geometry.

AB - 23Na NMR studies of the Na-K eutectic alloy embedded into porous glass with 7-nm pores showed that melting of Na 2 K confined nanoparticles is a continuous process with smooth changes in the Knight shift of a narrow resonance line and nuclear spin relaxation between those in the crystalline and liquid states. The intermediate state, which occurs upon melting is stable and more favorable than the liquid state. The inverse freezing transformation can be sharp as at a first-order transition or continuous depending on the initial temperature of cooling. The results suggest revision of theoretical predictions for the melting and freezing transitions in confined geometry.

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