Superionic conductivity in TlGaTe2 crystals

Autor:	O. A. Samedov, E. K. Huseynov, R. M. Sardarli, E. M. Qocayev, A. P. Abdullayev, F. T. Salmanov
Rok vydání:	2011
Předmět:	Crystal Permittivity Materials science Condensed matter physics Electrical resistivity and conductivity Relaxation (physics) Dielectric Crystal structure Conductivity Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Ion
Zdroj:	Semiconductors. 45:975-979
ISSN:	1090-6479 1063-7826
Popis:	Temperature dependences of electrical conductivity σ(T) and permittivity ɛ(T) of one-dimensional (1D) TlGaTe2 single crystals are investigated. At temperatures higher than 305 K, superionic conductivity of the TlGaTe2 is observed and is related to diffusion of Tl+ ions via vacancies in the thallium sublattice between (Ga3+Te22−− nanochains. A relaxation character of dielectric anomalies is established, which suggests the existence of electric charges weakly bound to the crystal lattice. Upon the transition to the superionic state, relaxors in the TlGaTe2 crystals are Tl+ dipoles ((Ga3+Te22−)− chains) that arise due to melting of the thallium sublattice and hops of Tl+ ions from one localized state to another. The effect of a field-induced transition of the TlGaTe2 crystal to the superionic state is detected.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0763df85148042c6f3f544a5a15469fc https://doi.org/10.1134/s1063782611080161 Zobrazit plný text záznamu Plný text ve formátu PDF