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Fabrication and Abnormal Magnetic Properties of MnO Nanoparticles via Vapor Phase Growth

Chang, Yongqin; Yu, Da Peng; Wang, Z; Long, Yi; Zhang, H Z; Ye, R C

Description

Nano-sized MnO particles were synthesized via vapor phase deposition on silicon substrates. The products were characterized by X-ray diffraction and transmission electron microscopy. The results reveal that the MnO nanoparticles are sphere like and well crystallized with diameters less than 40 nm. Magnetization measurements show that the MnO nanoparticles exhibit obvious ferromagnetic behavior with a ferromagnetic to paramagnetic phase transition at 42 K. A large coercivity of up to 4035 Oe and...[Show more]

dc.contributor.authorChang, Yongqin
dc.contributor.authorYu, Da Peng
dc.contributor.authorWang, Z
dc.contributor.authorLong, Yi
dc.contributor.authorZhang, H Z
dc.contributor.authorYe, R C
dc.date.accessioned2015-12-13T22:52:25Z
dc.identifier.issn0022-0248
dc.identifier.urihttp://hdl.handle.net/1885/81565
dc.description.abstractNano-sized MnO particles were synthesized via vapor phase deposition on silicon substrates. The products were characterized by X-ray diffraction and transmission electron microscopy. The results reveal that the MnO nanoparticles are sphere like and well crystallized with diameters less than 40 nm. Magnetization measurements show that the MnO nanoparticles exhibit obvious ferromagnetic behavior with a ferromagnetic to paramagnetic phase transition at 42 K. A large coercivity of up to 4035 Oe and a remanence of 0.646 (emu g -1) have been observed at 5 K. The ferromagnetic behavior of these MnO nanoparticles can be explained in terms of the presence of non-compensated surface spins on the antiferromagnetic core due to the high surface-to-volume ratio.
dc.publisherElsevier
dc.sourceJournal of Crystal Growth
dc.subjectKeywords: Chemical vapor deposition; Crystal structure; Ferromagnetism; Magnesia; Magnetic materials; Magnetic properties; Magnetization; Phase transitions; Silica; Synthesis (chemical); Transmission electron microscopy; Vapor phase epitaxy; X ray diffraction; Chem A1. Nanostructures; A3. Chemical vapor deposition process; B1. MnO; B2. Magnetic materials
dc.titleFabrication and Abnormal Magnetic Properties of MnO Nanoparticles via Vapor Phase Growth
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume281
dc.date.issued2005
local.identifier.absfor020406 - Surfaces and Structural Properties of Condensed Matter
local.identifier.ariespublicationMigratedxPub9842
local.type.statusPublished Version
local.contributor.affiliationChang, Yongqin , University of Science and Technology Beijing
local.contributor.affiliationYu, Da Peng , Peking University
local.contributor.affiliationWang, Z, Peking University
local.contributor.affiliationLong, Yi, University of Science and Technology Beijing
local.contributor.affiliationZhang, H Z, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationYe, R C, University of Science and Technology Beijing
local.description.embargo2037-12-31
local.bibliographicCitation.startpage678
local.bibliographicCitation.lastpage682
local.identifier.doi10.1016/j.jcrysgro.2005.05.033
dc.date.updated2015-12-11T10:51:01Z
local.identifier.scopusID2-s2.0-22144452210
CollectionsANU Research Publications

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