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Structural phase transition of Na-substituted Cs-leucite compounds in the range 123–1173 K

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
139
Issue
1
Identifiers
DOI: 10.1016/j.ssc.2006.05.016
Keywords
  • A. Leucite
  • D. Phase Transition
  • E. X-Ray Diffraction
  • E. Powder Synthesis

Abstract

Abstract (Cs,Na)-leucites, Cs 1− X Na X AlSi 2O 6 ( X=0.1, 0.2, 0.3), in which Cs + ions were replaced by Na + ions, were synthesized by a multistep heat treatment as a solid-state reaction. All the synthesized (Cs,Na)-leucites were well crystallized, which were identified as pollucite-related compounds. XRD study revealed that the (Cs,Na)-leucites were found to be undergo the structural phase transition of tetragonal to cubic in viewpoint of the splitting of the diffraction peak of the (800) plane of the synthesized (Cs,Na)-leucites. The structural phase transition was found to shift to lower temperatures with increasing amount of Na + ions, without the change in the molar ratio of Al/Si in CsAlSi 2O 6.

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