Abstract
The electrical conductivity σ of crystals of lithium heptagermanate Li2Ge7O15 doped with Cr and Mn is measured in an alternating-current field with a frequency of 1 kHz in the temperature range 300–700 K. It is found that doping strongly affects the electrical conductivity. It is established that the addition of 0.1 wt % Cr leads to an increase in the electrical conductivity σ by almost one order of magnitude, whereas the introduction of 0.03 wt % Mn substantially reduces the electrical conductivity along particular crystallographic directions. Data available on the incorporation of Cr and Mn impurity atoms into the lattice suggests that the electrical conductivity is determined by lithium ions hopping over interstitial positions along the structural channels.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Yu. A. Gurevich and Yu. I. Kharkats, Superionic Conductors (Nauka, Moscow, 1992) [in Russian].
A. K. Ivanov-Shits and S. E. Sigarev, Kristallografiya 31(6), 1130 (1986) [Sov. Phys. Crystallogr. 31 (6), 669 (1986)].
M. D. Volnyanskiĭ, M. P. Trubitsyn, and Yahia A. H. Obaidat, Fiz. Tverd. Tela (St. Petersburg) 50(3), 408 (2008) [Phys. Solid State 50 (3), 422 (2008)].
A. A. Galeev, N. M. Khasanova, A. V. Bykov, V. M. Vinokurov, N. M. Nizamutdinov, and G. R. Bulka, in Spectroscopy, Crystal Chemistry, and the Real Structure of Minerals and Their Analogues, Ed. by V. P. Morozov (Kazan University, Kazan 1990), p. 77 [in Russian].
M. P. Trubitsyn, M. D. Volnyanski, and A. Yu. Kudzin, Kristallografiya 36(6), 1472 (1991) [Sov. Phys. Crystallogr. 36 (6), 835 (1991)].
Y. Iwata, I. Shibuya, M. Wada, A. Sawada, and Y. Ishibashi, J. Phys. Soc. Jpn. 56, 2420 (1987).
Y. Iwata, N. Koyano, and I. Shibuya, Annu. Rep. Res. React. Inst., Kyoto Univ. 19, 11 (1987).
Yu. M. Poplavko, Physics of Dielectrics (Vishcha Shkola, Kiev, 1980) [in Russian].
M. D. Volnyanskiĭ, M. P. Trubitsyn, and Yakh’ya A. Kh. Obaĭdat, Fiz. Tverd. Tela (St. Petersburg) 49(8), 1385 (2007) [Phys. Solid State 49 (8), 1453 (2007)].
S. A. Basun, A. A. Kaplyanskiĭ, and S. P. Feofilov, Fiz. Tverd. Tela (St. Petersburg) 34(11), 3377 (1992) [Sov. Phys. Solid State 34 (11), 1807 (1992)].
A. A. Kaplyanski, S. A. Basun, and S. P. Feofilov, Ferroelectrics 169, 245 (1995).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © M.P. Trubitsyn, M.D. Volnyanskiĭ, Yahia A.H. Obaidat, 2008, published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 7, pp. 1184–1187.
Rights and permissions
About this article
Cite this article
Trubitsyn, M.P., Volnyanskiĭ, M.D. & Obaidat, Y.A.H. Ionic conduction in Li2Ge7O15 crystals doped with Cr and Mn ions. Phys. Solid State 50, 1234–1237 (2008). https://doi.org/10.1134/S106378340807007X
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S106378340807007X