dc.contributor.author | Zhang, Hongzhou | en |
dc.contributor.author | Coey, John | en |
dc.contributor.author | Schmitt, Wolfgang | en |
dc.contributor.author | Venkatesan, Munuswamy | en |
dc.date.accessioned | 2015-08-26T11:14:25Z | |
dc.date.available | 2015-08-26T11:14:25Z | |
dc.date.issued | 2015 | en |
dc.date.submitted | 2015 | en |
dc.identifier.citation | Chen, Y.H., Zhou, J.F., Mullarkey, D., (...), Coey, M., Zhang, H.Z., Synthesis, characterization and magnetic properties of ultrafine Co<inf>3</inf>O<inf>4</inf> octahedra, AIP Advances, 5, 8, 2015, 087122- | en |
dc.identifier.other | Y | en |
dc.description | PUBLISHED | en |
dc.description.abstract | Octahedral Co3O4 nanoparticles were synthesised in an aqueous ammonia solution using hexagonal β-Co(OH)2 nanoplates as starting materials. Electron microscopy analysis indicates that the Co3O4 particles have diameters of 20-40 nm and adopt a well-crystallized cubic spinel structure. The octahedral habit was verified by high angle annular dark field imaging. High resolution electron microscopy results revealed that the long axis of the octahedral Co3O4 nanoparticles coincides with crystallographic <111> direction and the facets are the {111} planes. Magnetization measurements reveal antiferromagnetic ordering below 10 K, with a paramagnetic Curie temperature of 3 K and a paramagnetic susceptibility that is double that expected for high-spin Co2+. The results show that a substantial fraction of the B-site Co3+ in the nanoparticles is in a high-spin state. | en |
dc.description.sponsorship | The work at the School of Physics and the Centre for Research on Adaptive Nanostructures and Nanodevices at Trinity College Dublin is supported by Science Foundation Ireland under Grant 07/SK/I1220a. The TEM work was conducted under the framework of the INSPIRE program, funded by the Irish Government’s Program for Research in Third Level Institutions, Cycle 4, National Development Plan 2007-2013. | en |
dc.format.extent | 087122 | en |
dc.relation.ispartofseries | AIP Advances | en |
dc.relation.ispartofseries | 5 | en |
dc.relation.ispartofseries | 8 | en |
dc.rights | Y | en |
dc.subject | Antiferromagnetism; Electron microscopes; Electron microscopy; Lanthanum compounds; Nanoparticles; Paramagnetism; Single crystals | en |
dc.subject.lcsh | Antiferromagnetism; Electron microscopes; Electron microscopy; Lanthanum compounds; Nanoparticles; Paramagnetism; Single crystals | en |
dc.title | Synthesis, characterization and magnetic properties of ultrafine Co<inf>3</inf>O<inf>4</inf> octahedra | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/hozhang | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/venkatem | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/jcoey | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/schmittw | en |
dc.identifier.rssinternalid | 105578 | en |
dc.identifier.doi | http://dx.doi.org/10.1063/1.4928494 | en |
dc.rights.ecaccessrights | openAccess | |
dc.subject.TCDTheme | Nanoscience & Materials | en |
dc.identifier.orcid_id | 0000-0002-1188-7810 | en |
dc.contributor.sponsor | Science Foundation Ireland (SFI) | en |
dc.contributor.sponsorGrantNumber | 07/SK/I1220a | en |
dc.identifier.uri | http://hdl.handle.net/2262/74525 | |