Lithium ions conduction in Li2xMn1-xPS3 films |
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| Authors: | L Silipigni L Schirò L Monsù Scolaro G De Luca G Salvato |
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| Institution: | 1. Dipartimento di Fisica e di Scienze della Terra, Università di Messina, V.le F. Stagno d’Alcontres 31, I-98166 Messina, Italylsilipigni@unime.it;3. Dipartimento di Fisica e di Scienze della Terra, Università di Messina, V.le F. Stagno d’Alcontres 31, I-98166 Messina, Italy;4. Dipartimento di Scienze Chimiche, Università di Messina, Salita Sperone 31, I-98166 Messina, Italy;5. Dipartimento di Scienze del farmaco e Prodotti per la Salute, Università di Messina, V.le Annunziata, I-98168 Messina, Italy;6. Istituto per i Processi Chimico-Fisici del C.N.R., sede di Messina, V.le F. Stagno d’Alcontres 37, 98158 Messina, Italy |
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| 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 systems. |
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| Keywords: | thin films chemical synthesis dielectric response dielectric spectroscopy |
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