论文信息 - Raman studies of superionic phase transition in (NH4)4H2(SeO4)3

Raman studies of superionic phase transition in (NH4)4H2(SeO4)3

Abstract NIR FT Raman spectroscopy was used to investigate molecular groups dynamics in the vicinity of superionic phase transition in (NH4)4H2(SeO4)3. It was found that the low temperature phase transition becomes unstable about 15 K below the superionic phase transition Ts. The observed changes refer mainly to the dynamics of SeO4 and HSeO4 entities. The Raman spectra of PEO+ +(NH4)4H2(SeO4)3 polymer are presented as well.

M. Połomska | A. Pawłowski

[1] S. Chandra,et al. Hydrogen Ion Transport Studies in PEO:NH4HSO4 Polymer Electrolyte , 1995 .

[2] B. Hilczer,et al. Protonic Conductivity and Superionic Phase Transitions in Inorganic Sulphates and Selenates , 1994 .

[3] B. Hilczer,et al. DSC study of superionic phase transition in (NH4)4H2(SeO4)3 single crystals , 1994 .

[4] Z. Czapla,et al. Superionic phase transition in (NH4)2SeO4·2NH4HSeO4 single crystal at 378 K , 1986 .