Li2xMn1-xPS3 films have been synthesized by exfoliating MnPS3 through the successive intercalations of K+ and Li+ ions. Their dielectric response has been measured from 80 to 350 K in the frequency range of (102–106) Hz. The obtained data have been analyzed in terms of both complex permittivity ε* and the ac conductivity σac. The frequency dependence of σac has been interpreted in terms of the Jonscher’s law, whose exponent n decreases by increasing temperature. The n values lie between 0.479 and 0.501 and are typical of materials in which the ac conductivity is due to multiple hops of carriers. By analyzing the σdc temperature dependence, the observed dielectric response has been attributed to the intercalated lithium ions, and the Li2xMn1-xPS3 films have been classified as hopping charge carrier system
Lithium ions conduction in Li2xMn1-xPS3 films
SILIPIGNI, Letteria;SCHIRO', LILLA;MONSU' SCOLARO, Luigi;DE LUCA, Giovanna;SALVATO, GABRIELE
2014-01-01
Abstract
Li2xMn1-xPS3 films have been synthesized by exfoliating MnPS3 through the successive intercalations of K+ and Li+ ions. Their dielectric response has been measured from 80 to 350 K in the frequency range of (102–106) Hz. The obtained data have been analyzed in terms of both complex permittivity ε* and the ac conductivity σac. The frequency dependence of σac has been interpreted in terms of the Jonscher’s law, whose exponent n decreases by increasing temperature. The n values lie between 0.479 and 0.501 and are typical of materials in which the ac conductivity is due to multiple hops of carriers. By analyzing the σdc temperature dependence, the observed dielectric response has been attributed to the intercalated lithium ions, and the Li2xMn1-xPS3 films have been classified as hopping charge carrier systemPubblicazioni consigliate
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