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Issue 52, 2016, Issue in Progress
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Growth, structure and magnetism of ε-Fe2O3 in nanoparticle form

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Abstract

We present a novel and easy synthetic path to prepare ε-Fe2O3 (∼90%) with a small portion of α-Fe2O3 nanoparticles embedded in an amorphous silica matrix. An exhaustive structural study reveals the higher relative concentration of the ε-phase, with an average particle size of 17 nm. Confocal Raman microscopy and X-ray absorption spectroscopy are presented as novel techniques to characterize the ε-polymorph. The magnetic properties have been studied in a wide range of temperatures (5–1000 K), detecting blocking effects (∼135 K), collapse effects (50–125 K), Morin (∼268 K) and Néel (∼505 K) transitions.

Graphical abstract: Growth, structure and magnetism of ε-Fe2O3 in nanoparticle form

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Article information


Submitted
21 Jan 2016
Accepted
28 Apr 2016
First published
05 May 2016

RSC Adv., 2016,6, 46380-46387
Article type
Paper

Growth, structure and magnetism of ε-Fe2O3 in nanoparticle form

J. López-Sánchez, A. Muñoz-Noval, A. Serrano, M. Abuín, J. de la Figuera, J. F. Marco, L. Pérez, N. Carmona and O. Rodríguez de la Fuente, RSC Adv., 2016, 6, 46380 DOI: 10.1039/C6RA01912A

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