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Nanomaterials 2017, 7(7), 151; doi:10.3390/nano7070151

Mesoporous Silica Matrix as a Tool for Minimizing Dipolar Interactions in NiFe2O4 and ZnFe2O4 Nanoparticles

Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
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Received: 8 February 2017 / Revised: 15 June 2017 / Accepted: 16 June 2017 / Published: 22 June 2017
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Abstract

NiFe2O4 and ZnFe2O4 nanoparticles have been prepared encased in the MCM (Mobile Composition of Matter) type matrix. Their magnetic behavior has been studied and compared with that corresponding to particles of the same composition and of a similar size (prepared and embedded in amorphous silica or as bare particles). This study has allowed elucidation of the role exerted by the matrix and interparticle interactions in the magnetic behavior of each ferrite system. Thus, very different superparamagnetic behavior has been found in ferrite particles of similar size depending on the surrounding media. Also, the obtained results clearly provide evidence of the vastly different magnetic behavior for each ferrite system. View Full-Text
Keywords: superparamagnetic; ferrite; MCM-matrix; dipolar interactions; matrix effect superparamagnetic; ferrite; MCM-matrix; dipolar interactions; matrix effect
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Virumbrales, M.; Saez-Puche, R.; Torralvo, M.J.; Blanco-Gutierrez, V. Mesoporous Silica Matrix as a Tool for Minimizing Dipolar Interactions in NiFe2O4 and ZnFe2O4 Nanoparticles. Nanomaterials 2017, 7, 151.

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