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The effect of thermal treatment on irreversibility of superprotonic phase transition in Cs5H3(SeO4)4·xH2O crystals

✍ Scribed by V.V Sinitsyn; A.I Baranov; A.F Gurov; B.V Merinov; D Jones; J Rozière

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
269 KB
Volume
97
Category
Article
ISSN
0167-2738

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✦ Synopsis

The effect of the thermal treatment on the superprotonic phase transition (T . 348 K) and protonic transport of the sp Cs H (SeO ) ? xH O single crystals was studied. It was found that annealing at T . T results in the suppression of the 5 3 4 4 2 sp phase transition to the low-conductivity state. This irreversibility of the superprotonic phase transition is due to changes in the water content. A model of the water loss process is proposed.

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Stabilisation of disordered superprotoni
Stabilisation of disordered superprotonic phases in crystals of the M5H3(AO4)4·xH2O family
✍ A.I Baranov; V.V Sinitsyn; V.Yu Vinnichenko; D.J Jones; B Bonnet 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 585 KB

In order to clarify the nature of the suppression of the order-disorder phase transitions and the stabilisation of the disordered highly-conducting state, conductivity, thermal (TGA and DSC) and infrared spectroscopic measurements have been carried out on single crystals of Cs H (SO ) ? xH O, Cs H (