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  Synthesis of Hard Magnetic Ordered Mesoporous Co3O4 /CoFe2O4 Nanocomposites

Tüysüz, H., Salabaş, E.-L., Bill, E., Bongard, H., Spliethoff, B., Lehmann, C. W., et al. (2012). Synthesis of Hard Magnetic Ordered Mesoporous Co3O4 /CoFe2O4 Nanocomposites. Chemistry of Materials, 24(13), 2493-2500. doi:10.1021/cm3005166.

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 Creators:
Tüysüz, Harun1, Author              
Salabaş, Elena-Lorena2, Author              
Bill, Eckhard3, Author
Bongard, Hans4, Author              
Spliethoff, Bernd4, Author              
Lehmann, Christian W.4, Author              
Schüth, Ferdi2, Author              
Affiliations:
1Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950290              
2Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, DE, ou_1445589              
3Max-Planck-Institut für Bioanorganische Chemie, Stiftstraße 34, 45470 Mülheim an der Ruhr , ou_persistent22              
4Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, DE, ou_1445625              

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Free keywords: ordered mesoporous materials; nanocasting; magnetism; exchange bias
 Abstract: The nanocomposite Co3O4/CoFe2O4 heterostructured mesoporous material was produced via a simple solid-solid reaction of an iron precursor with ordered mesoporous Co3O4 that had been prepared via nanocasting from mesoporous silica as hard template. The magnetic behavior of the exchange-coupled antiferromagnetic/ferrimagnetic (AFM/FM) system was investigated via superconducting quantum interference device (SQUID) magnetometry and 57Fe Mossbauer spectroscopy. The low-temperature magnetization loops of the Co3O4/CoFe2O4 heterostructure present exchange bias under cooling in an applied magnetic field. The antiferromagnetic ordering temperature of Co3O4 is increased due to the proximity of the hard magnetic CoFe2O4 phase. The nanocomposite Co3O4/CoFe2O4 behaves as an exchange coupled system with a cooperative magnetic switching.

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Language(s): eng - English
 Dates: 2012-06-152012-07-10
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/cm3005166
 Degree: -

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Title: Chemistry of Materials
  Abbreviation : Chem. Mater.
Source Genre: Journal
 Creator(s):
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 24 (13) Sequence Number: - Start / End Page: 2493 - 2500 Identifier: ISSN: 0897-4756
CoNE: https://pure.mpg.de/cone/journals/resource/954925561571