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Proton conduction of Ba6Mn24O48 tunnel manganite |
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| Authors: | EA Pomerantseva LS Leonova EA Goodilin YuA Dobrovolsky YuD Tretyakov |
| Institution: | 1. Department of Materials Science, Lomonosov Moscow State University, Lenin Hills, 119992, Moscow, Russia;2. Department of Chemistry, Lomonosov Moscow State University, Lenin Hills, 119992, Moscow, Russia;3. Institute of Problems of Chemical Physics RAS, Acad. Semenov Avenue 1, 142432, Chernogolovka, Russia |
| Abstract: | A protonated Ba6Mn24O48 phase with an original tunnel crystal structure and mixed-valent manganese has been prepared in the form of powders and millimeter-long fibrous crystals (whiskers). A combined study either by impedance spectroscopy or transport measurements revealed that the Ba6Mn24O48 phase demonstrates mixed conductivity with both proton and electronic components reaching ～ 10? 3 Ω? 1?cm? 1 at room temperature. |
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