Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 오누리 | - |
dc.date.accessioned | 2022-03-04T07:58:19Z | - |
dc.date.available | 2022-03-04T07:58:19Z | - |
dc.date.issued | 2020-06 | - |
dc.identifier.citation | MATERIALS TODAY COMMUNICATIONS, v. 25, article no. 101298 | en_US |
dc.identifier.issn | 2352-4928 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S2352492820323096?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/168829 | - |
dc.description.abstract | Crystal structures and hopping motions of cobalt manganese spinel oxides across a wide composition range (CoxMn3-xO4 (CMO), 0.9 ˂= x ˂= 2.7) are investigated in order to clarify the corresponding mechanisms of electrical behaviors as negative temperature coefficient thermistors. Based on the diffraction measurements, a tetragonal to cubic spinel transition are observed mostly with increasing Co content. Hopping distance for a series of CMO are calculated by the variable range hopping mechanism, which is changed as a function of composition, resulting to the observed unique electrical properties. According to the electrical and structural analysis, the electrical properties of CMO compounds with different Co contents majorly determined by tetragonal to cubic phase transition, cation distribution, and hopping distance. In addition, the formation of secondary phase (i.e., CoO) and another CMO phase may also significantly affect the electrical properties. | en_US |
dc.description.sponsorship | This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. A portion of this research used resources at Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The authors would like to acknowledge the support from Nuclear Reactor Program at North Carolina State University. The authors thank Dr. Ashfia Huq, Dr. Ching-Chang Chung, Dr. Qingsheng Cai, Brienne Johnson, and Julian Brodie for assistances with different diffraction measurements. This research supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) and funded by the Ministry of Science, ICT and Future Planning (2018R1D1A1A02085938). This research was also supported by the NRF Joint Research Program through the National Research Foundation of Korea (NRF) and funded by the Ministry of Science, ICT and Future Planning (2018K2A9A1A06073905) | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER | en_US |
dc.subject | park plasma sintering | en_US |
dc.subject | Spinel | en_US |
dc.subject | Cobalt manganese oxides | en_US |
dc.subject | Hopping conduction | en_US |
dc.title | Crystal structures and electrical properties of cobalt manganese spinel oxides | en_US |
dc.type | Article | en_US |
dc.relation.volume | 25 | - |
dc.identifier.doi | 10.1016/j.mtcomm.2020.101298 | - |
dc.relation.page | 101298-101298 | - |
dc.relation.journal | MATERIALS TODAY COMMUNICATIONS | - |
dc.contributor.googleauthor | Park, Kyoung Ryeol | - |
dc.contributor.googleauthor | Han, HyukSu | - |
dc.contributor.googleauthor | Hou, Dong | - |
dc.contributor.googleauthor | Jones, Jacob L. | - |
dc.contributor.googleauthor | Oh, Nuri | - |
dc.contributor.googleauthor | Ahn, Chisung | - |
dc.contributor.googleauthor | Lee, Jaewoong | - |
dc.contributor.googleauthor | Lee, Seung Hwan | - |
dc.contributor.googleauthor | Mhin, Sungwook | - |
dc.relation.code | 2020048772 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | SCHOOL OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | irunho | - |
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