TY - JOUR
T1 - Frequency dependent conductivity of organic-inorganic mixed superionic conductor glasses
AU - Kawamura, Junichi
AU - Kuwata, Naoaki
AU - Nakamura, Yoshio
N1 - Funding Information:
The authors thank to Professor T. Awano of Tohoku Gakuin university for his helpful discussions. This work is partly supported by a Scientific Research Grant by Ministry of Science (#05640432), and Grant-in-Aid for Scientific Research on Priority Areas (NO. 260) from The Ministry of Education, Science, Sports and Culture. The authors also thank “Foundation for Promotion of Material Science and Technology of Japan (MST Foundation)” for the financial support.
PY - 1998/12/1
Y1 - 1998/12/1
N2 - In order to detect local motion of mobile silver cations in organic-inorganic mixed glasses composed of AgI and alkylammonium iodides, their electrical conductivity at radio and microwave frequencies was measured in different compositions. Although their DC conductivity shows a clear transition from insulator to superionic conductor at AgI volume fraction φ ∼0.35, the high frequency value is continuous at the threshold. Details of frequency dependence were measured at room temperatures from DC to 10 GHz. Only a small dependence was seen in the high conducting glasses, however, the sample near the percolation threshold showed power-law dependence σ[ω] ∼ ωn at low frequency whose slope n ∼ 0.6 and approaches to unity at high frequencies.
AB - In order to detect local motion of mobile silver cations in organic-inorganic mixed glasses composed of AgI and alkylammonium iodides, their electrical conductivity at radio and microwave frequencies was measured in different compositions. Although their DC conductivity shows a clear transition from insulator to superionic conductor at AgI volume fraction φ ∼0.35, the high frequency value is continuous at the threshold. Details of frequency dependence were measured at room temperatures from DC to 10 GHz. Only a small dependence was seen in the high conducting glasses, however, the sample near the percolation threshold showed power-law dependence σ[ω] ∼ ωn at low frequency whose slope n ∼ 0.6 and approaches to unity at high frequencies.
KW - Alkylammonium iodides
KW - Composite
KW - Percolation threshold
KW - Silver iodide
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U2 - 10.1016/s0167-2738(98)00333-6
DO - 10.1016/s0167-2738(98)00333-6
M3 - Article
AN - SCOPUS:0032320655
VL - 113-115
SP - 703
EP - 709
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
ER -