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Simple synthesis and magnetic properties of Fe3O4/BaSO4 multi-core/shell particles
Li, J. H.1,2; Hong, R. Y.1,2,3,4; Li, H. Z.3; Ding, J.5; Zheng, Y.6; Wei, D. G.7; Hong, RY
2009-01-15
Source PublicationMATERIALS CHEMISTRY AND PHYSICS
ISSN0254-0584
Volume113Issue:1Pages:140-144
AbstractIn this paper. the magnetic properties of Fe3O4 nanoparticles at different temperatures were investigated. It was found that the magnetism of Fe3O4 nanoparticles vanished at 550 degrees C when exposed in the atmosphere for 2 h. X-ray diffractorneter, Fourier transform infrared spectroscope and scanning electron microscope were employed to explain the change of magnetism of Fe3O4 nanoparticles. The route of phase transitions from Fe3O4 to alpha-Fe2O3 along with the increasing temperature was brought out. in order to maintain the magnetism of Fe3O4 nanoparticles at a higher temperature, a simple method was introduced to deposit BaSO4 shell on the Fe3O4 cores to prepare Fe3O4/BaSO4 multi-core/shell particles. The magnetism of Fe3O4/BaSO4 multi-core/shell particles did not vanish till 750 degrees C. The change of magnetism of Fe3O4/BaSO4 multi-core/s hell particles was proved to be related to the appearance of "holes" on the surfaces of BaSO4 shells. (C) 2008 Elsevier B.V. All rights reserved.
KeywordMagnetic Materials Chemical Synthesis Magnetic Properties Phase Transitions
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.matchemphys.2008.07.054
Indexed BySCI
Language英语
WOS KeywordLOW-TEMPERATURE OXIDATION ; FE3O4 NANOPARTICLES ; HEMATITE ALPHA-FE2O3 ; CHITOSAN ; FLUID ; TRANSFORMATION ; SPECTROSCOPY ; MECHANISM ; PRECURSOR
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000262343500028
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6763
Collection多相复杂系统国家重点实验室
Corresponding AuthorHong, RY
Affiliation1.Soochow Univ, Dept Chem Engn, SIP, Suzhou 215123, Peoples R China
2.Soochow Univ, Key Lab Organ Synth Jiangsu Prov, SIP, Suzhou 215123, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase React, Beijing 100080, Peoples R China
4.CAS, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
5.IBM Corp, Rochester, MN 55901 USA
6.Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada
7.Harvard Univ, Sch Engn & Appl Sci, Ctr Nanoscale Syst, Cambridge, MA 02139 USA
Recommended Citation
GB/T 7714
Li, J. H.,Hong, R. Y.,Li, H. Z.,et al. Simple synthesis and magnetic properties of Fe3O4/BaSO4 multi-core/shell particles[J]. MATERIALS CHEMISTRY AND PHYSICS,2009,113(1):140-144.
APA Li, J. H..,Hong, R. Y..,Li, H. Z..,Ding, J..,Zheng, Y..,...&Hong, RY.(2009).Simple synthesis and magnetic properties of Fe3O4/BaSO4 multi-core/shell particles.MATERIALS CHEMISTRY AND PHYSICS,113(1),140-144.
MLA Li, J. H.,et al."Simple synthesis and magnetic properties of Fe3O4/BaSO4 multi-core/shell particles".MATERIALS CHEMISTRY AND PHYSICS 113.1(2009):140-144.
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