Crystalline phase content and ionic conductivity correlation in LATP glass-ceramic

Swati Soman, Yoshiki Iwai, Junichi Kawamura, Ajit Kulkarni

    Research output: Contribution to journalArticlepeer-review

    40 Citations (Scopus)


    Li 2O-Al 2O 3-TiO 2-P 2O 5 (LATP) glass was fabricated by conventional melt quenching route. Glass transition temperature (T g=296 °C) and crystallization temperatures (T C1,2) were obtained from thermal analysis. LATP glass was converted to glass-ceramic by heat treatment in the range 550-950 °C for 6 h. X-ray diffraction analysis revealed LiTi 2(PO 4) 3 as a major phase. Ionic conductivity increased monotonically with concentration, reaching a maximum of ∼10 -4 S/cm. AlPO 4 phase was detected in samples heat-treated above 850 °C. Its presence decreased the conductivity, suggesting LiTi 2(PO 4) 3 phase as main contributor to high ionic conductivity. NMR spectra confirmed the presence of mobile 7Li ions in the entire sample series and also gave some information on the structure and dynamics of conductivity.

    Original languageEnglish
    Pages (from-to)1761-1766
    Number of pages6
    JournalJournal of Solid State Electrochemistry
    Issue number5
    Publication statusPublished - 2012 May


    • Electrical conductivity
    • Glass-ceramic
    • LATP glass
    • Solid electrolytes

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Electrochemistry
    • Electrical and Electronic Engineering


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