Electric-field-induced reversible phase transitions in a spontaneously ion-Intercalated 2D metal oxide

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buir.contributor.authorRasouli, Hamid Reza
buir.contributor.authorMehmood, Naveed
buir.contributor.authorSheraz, Ali
buir.contributor.authorKasırga, Talip Serkan
buir.contributor.orcidRasouli, Hamid Reza|0000-0001-8383-7460
buir.contributor.orcidMehmood, Naveed|0000-0002-1278-5875
buir.contributor.orcidSheraz, Ali|0000-0001-6772-9048
buir.contributor.orcidKasırga, Talip Serkan|0000-0003-3510-5059
dc.citation.epage4005en_US
dc.citation.issueNumber9en_US
dc.citation.spage3997en_US
dc.citation.volumeNumber21en_US
dc.contributor.authorRasouli, Hamid Reza
dc.contributor.authorKim, J.
dc.contributor.authorMehmood, Naveed
dc.contributor.authorSheraz, Ali
dc.contributor.authorJo, M. K.
dc.contributor.authorSong, Seungwoo
dc.contributor.authorKang, K.
dc.contributor.authorKasırga, Talip Serkan
dc.date.accessioned2022-01-26T10:46:24Z
dc.date.available2022-01-26T10:46:24Z
dc.date.issued2021-05-12
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractElectric field driven reversible phase transitions in two-dimensional (2D) materials are appealing for their potential in switching applications. Here, we introduce potassium intercalated MnO2 as an exemplary case. We demonstrate the synthesis of large-area single-crystal layered MnO2 via chemical vapor deposition as thin as 5 nm. These crystals are spontaneously intercalated by potassium ions during the synthesis. We showed that the charge transport in 2D K-MnO2 is dominated by motion of hydrated potassium ions in the interlayer space. Under a few volts bias, separation of potassium and the structural water leads to formation of different phases at the opposite terminals, and at larger biases K-MnO2 crystals exhibit reversible layered-to-spinel phase transition. These phase transitions are accompanied by electrical and optical changes in the material. We used the electric field driven ionic motion in K-MnO2 based devices to demonstrate the memristive capabilities of two terminal devices.en_US
dc.identifier.doi0.1021/acs.nanolett.1c00735en_US
dc.identifier.eissn1530-6992
dc.identifier.issn1530-6984
dc.identifier.urihttp://hdl.handle.net/11693/76795
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttps://doi.org/10.1021/acs.nanolett.1c00735en_US
dc.source.titleNano Lettersen_US
dc.subject2D materialsen_US
dc.subjectPhase transitionsen_US
dc.subjectIon transporten_US
dc.subjectMnO2en_US
dc.subjectReal time optical chemical vapor depositionen_US
dc.titleElectric-field-induced reversible phase transitions in a spontaneously ion-Intercalated 2D metal oxideen_US
dc.typeArticleen_US

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Institute of Materials Science and Nanotechnology (UNAM)
Department of Physics