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Electrical conductivity of Li2Ge7O15 crystals doped with Al.
- Source :
-
Molecular Crystals & Liquid Crystals . 2020, Vol. 700 Issue 1, p13-21. 9p. - Publication Year :
- 2020
-
Abstract
- Electrical conductivity σ was studied in single- and polycrystalline lithium heptagermanate Li2Ge7O15 doped with Al. In Li2Ge7O15:Al single crystal conductivity demonstrated strong anisotropy. As compared with pure crystal, doping significantly increased conductivity along the structural channels parallel to a and c axes. The doping effect was interpreted by supposing that Al3+ substituted for Ge4+ hosts. Li interstitials (ALi) were considered as the defects compensating charge imbalance introduced by the impurity. Heterovalent substitution Al3+(Ge4+) noticeably increased concentration of ALi which were mobile enough and contributed to conductivity. Influence of Al doping on σ was compared for Li2Ge7O15 single crystal and polycrystal. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15421406
- Volume :
- 700
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Molecular Crystals & Liquid Crystals
- Publication Type :
- Academic Journal
- Accession number :
- 144726518
- Full Text :
- https://doi.org/10.1080/15421406.2020.1732547