Published April 2009 | Version v1
Journal article Metadata-only

The study of novel Fe3O4/γ-Fe2O3 core/shell nanomaterials with improved properties

Creators

  • 1. Graduate School of the Chinese Academy of Sciences, Beijing 100049 (China)
  • 2. State Key Laboratory of Application of Rare Earth Resources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street Changchun, Changchun 130022 (China)
  • 3. College of Chemistry, Jilin University, Changchun 130012 (China)

Description

The surface structure of the iron oxide nanoparticles obtained by the co-precipitation method has been investigated, and a thin layer of α-FeOOH absorbed on surface of the nanoparticle is confirmed by analyses of Fourier transform infrared (FTIR), X-ray photoelectron spectra (XPS) and surface photovoltage spectroscopy (SPS). After annealed at 400 deg. C, the α-FeOOH can be converted to γ-Fe2O3. The simple-annealed procedure resulted in the formation of Fe3O4/γ-Fe2O3 core/shell structure with improved stability and a higher magnetic saturation value, and also the simple method can be used to obtain core/shell structure in other similar system

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jmmm.2008.10.022

Additional details

Identifiers

DOI
10.1016/j.jmmm.2008.10.022;
PII
S0304-8853(08)01058-5;

Publishing Information

Journal Title
Journal of Magnetism and Magnetic Materials
Journal Volume
321
Journal Issue
8
Journal Page Range
p. 1052-1057
ISSN
0304-8853
CODEN
JMMMDC

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40058710
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANNEALING; COPRECIPITATION; INFRARED SPECTRA; IRON OXIDES; IRON-GAMMA; MAGNETIC PROPERTIES; NANOSTRUCTURES; SHELLS; STABILITY; SURFACES; THIN FILMS; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
CHALCOGENIDES; ELECTRON SPECTROSCOPY; ELEMENTS; FILMS; HEAT TREATMENTS; IRON; IRON COMPOUNDS; METALS; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; PHYSICAL PROPERTIES; PRECIPITATION; SEPARATION PROCESSES; SPECTRA; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.