Low‐temperature behaviour of the lithium modes in monoclinic Li 2 SO 4 | Zendy

Cazzanelli E. | Zendy; Fontana A. | Zendy; Rocca F. | Zendy; Frech R. | Zendy

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Low‐temperature behaviour of the lithium modes in monoclinic Li 2 SO 4

Author(s) -

Cazzanelli E.,

Fontana A.,

Rocca F.,

Frech R.

Publication year - 1987

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221400232

Subject(s) - raman spectroscopy , monoclinic crystal system , atmospheric temperature range , laser linewidth , phase transition , lithium sulfate , chemistry , analytical chemistry (journal) , materials science , spectral line , lithium (medication) , lattice (music) , crystal structure , crystallography , ion , condensed matter physics , ionic bonding , optics , thermodynamics , physics , medicine , laser , organic chemistry , chromatography , astronomy , endocrinology , acoustics

Polarized Raman spectra of anhydrous monocrystalline lithium sulfate are studied from 90 K to room temperature. The analyzed frequency range, between 260 and 580 cm −1 , includes the lattice modes of the Li + cations and the internal bending of the sulfate anions. The observed temperature dependence of the frequency, linewidth, and intensity of the Raman peaks can be explained by a weak phase transition around 180 K.

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