Electrical conductivity and thermal properties of Li,Fe,(PO,), single crystals have been studied over a wide temperature range. The phase transformation detected at 483 K by DSC is accompanied by an anomaly of the conductivity for crystals oriented along the b-axis. The transition to the high-temper
Electric conductivity, dielectric permittivity and Raman scattering spectra of Li3Fe2(PO4)3 single crystals
β Scribed by A. Orliukas; R. Vaitkus; A. Kezionis; S. Aukselis
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 308 KB
- Volume
- 40-41
- Category
- Article
- ISSN
- 0167-2738
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The low-temperature form of K 3 Sm(PO 4 ) 2 crystallizes in the glaserite type. The Raman and infrared spectra have been investigated: they are consistent with the proposed space monoclinic system [a = 7.4347(5) A Λ, b = 5.6270(5) A Λ, c = 9.4919(5) A Λ, Ξ² = 90.870(6)Β°, Z = 2, space group P2 1 /m].
Infrared and polarized Raman spectra of (NH4)JH(S04)1 have been recorded and analysed. Multiple bands are observed for the vibrational modes of SO:-and NH: groups. HSO; and SO:-ions are found to coexist with vibrational interaction between them. NH: ion is not rotating freely in the lattice.