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Micro and Nanosystems

Editor-in-Chief

ISSN (Print): 1876-4029
ISSN (Online): 1876-4037

Study of Quasi-Monophase Y-Type Hexaferrite Ba2Mg2Fe12O22 Powder

Author(s): Tatyana Koutzarova, Svetoslav Kolev, Ivan Nedkov, Kiril Krezhov, Daniela Kovacheva, Chavdar Ghelev, Benedicte Vertruyen, Catherine Henrist and Rudi Cloots

Volume 6, Issue 1, 2014

Page: [14 - 20] Pages: 7

DOI: 10.2174/187640290601140919123530

Price: $65

Abstract

We present the structural and magnetic properties of a multiferroic Ba2Mg2Fe12O22 hexaferrite composite containing a small amount of MgFe2O4. The composite material was obtained by auto-combustion synthesis and, alternatively, by co-precipitation. The Ba2Mg2Fe12O22 particles obtained by co-precipitation have an almost perfect hexagonal shape in contrast with those prepared by auto-combustion. Two magnetic phase transitions, responsible for the composite’s multiferroic properties, were observed, namely, at 183 K and 40 K for the material produced by auto-combustion, and at 196 K and 30 K for the sample prepared by co-precipitation. No magnetic phase transitions in these temperature ranges were observed for a MgFe2O4 sample, which shows that the magnesium ferrite does not affect the multiferroic properties of this type of multiferroic metarials.

Keywords: Auto-combustion synthesis, Ba2Mg2Fe12O22, co-precipitation, MgFe2O4, multiferroic composite, multiferroics properties, Y-type hexaferrite.


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