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Title: High-temperature nuclear magnetic resonance study of phase transition kinetics in LiNaSO{sub 4}

A new high-temperature NMR technique for measurements of the phase transition kinetics in solids has been developed. The technique allows measuring the time evolution of the volume of the appearing phase at controlled cooling rates. Developed method was applied to study the phase transition kinetics in the superionic conductor LiNaSO{sub 4}. It was revealed that the phase transition in LiNaSO{sub 4} is governed by the diffusion-controlled growth of nuclei (“germs”). An effect of the crystallite rearrangement in the LiNaSO{sub 4} powder after cooling through the phase transition was also revealed. This effect was studied by means of high-temperature XRD and NMR.
Authors:
; ; ; ;  [1]
  1. CNRS, CEMHTI UPR 3079, Univ. Orléans, F-45071 Orléans (France)
Publication Date:
OSTI Identifier:
22493091
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 24; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COOLING; DIFFUSION; IONIC CONDUCTIVITY; KINETICS; LITHIUM COMPOUNDS; NUCLEAR MAGNETIC RESONANCE; PHASE TRANSFORMATIONS; POWDERS; SODIUM SULFATES; TEMPERATURE RANGE 0400-1000 K; X-RAY DIFFRACTION