Vibratial and DSC investigations of the (NH4)4H2(SeO4)3 crystal

• Autorzy: Baran J. , Marchewka M.K. , Drozd M. , Czapla Z.
• Języki publikacji: EN

Abstrakty

EN

Polarized Raman and powder IR spectra for a (NH4)4H3(SeO4)3 crystal were measured at room temperature and discussed with relation to the crystal structure. Additionally, the reflection polarized IR spectra were measured. The transition into a metastable phase was observed for the first heating DSC scan. In following cooling and heating scans 5 and 7 phase transitions, respectively, were observed. No changes were noticed between the IR spectra of the fresh sample and that which was heated up to a superionic phase and cooled down. A strong reaction between the KBr windows and the sample occurs when heating to the superionic phase.

Słowa kluczowe

EN

DSC; phase transitions; Raman and IR spectra; superionic phase

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 1998
• Tom: Vol. 72, nr 2
• Strony: 355--367
• Opis fizyczny: Bibliogr. 20 poz., tab., wykr.

Twórcy

autor

Baran J.

autor

Marchewka M.K.

autor

Drozd M.

autor

Czapla Z.

• Institute of Low Temperature and Structure Research Polsh Academy of Science 2 Okólna street 50-950 Wrocław Poland