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Ferroelastic-Superprotonic Phase Transition of [K3]x[(NH4)3]1-xH(SO4)2 Single Crystal Studied by Raman Scattering
http://hdl.handle.net/20.500.12678/0000002246
http://hdl.handle.net/20.500.12678/00000022469d1f2f17-424c-4694-a833-2bf7dcaa66b8
e9799716-f88f-4625-893d-3276586f82aa
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Journal article | ||||||
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Publication | ||||||
Title | ||||||
Title | Ferroelastic-Superprotonic Phase Transition of [K3]x[(NH4)3]1-xH(SO4)2 Single Crystal Studied by Raman Scattering | |||||
Language | en | |||||
Publication date | 2004 | |||||
Authors | ||||||
Win Kyaw | ||||||
Ye Chan | ||||||
Ohn Than | ||||||
Pho Kaung | ||||||
Sein Htoon | ||||||
Description | ||||||
Vibrational modes of the sulphate ion in mixed crystals, [K3]x[(NH4)3]1-xH(SO4)2 of Tripotassium Hydrogen Disulphate, K3H(SO4)2 and Triammonium Hydrogen Disulphate, (NH4)3H(SO4) were studied by Raman Scattering Spectroscopy. The V1 - mode frequency of the sulphate ion at room temperature is found to be shifted downwards with different crystalline environments contributed by the increase of countercation K3+ content. The temperature dependence of frequencies and that of linewidths of the V1 mode show anomalous changes near the ferroelasticsuperprotonic phase transition temperature. Critical slowing-down of the H...SO4 defect motion is observed. | ||||||
Keywords | ||||||
Mixed Crystals of Tripotassium Hydrogen Disulphate and Triammonium Hydrogen Disulphate | ||||||
Identifier | https://uyr.uy.edu.mm/handle/123456789/531 | |||||
Journal articles | ||||||
1 | ||||||
Journal of the Asia Research Centre | ||||||
1 | ||||||
Conference papaers | ||||||
Books/reports/chapters | ||||||
Thesis/dissertations |