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Effects of Sm3+ on Microstructure and Magnetic Properties of Ni0.4Zn0.6SmxFe2-XO4(x=0~0.07) Ferrites

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Abstract:

The effects of Fe3+ substitutions by Sm3+ on microstructure and magnetic properties of Ni0.4Zn0.6Fe2-xSmxO4 ferrites prepared by conventional solid-state reaction method were investigated. With increasing Sm3+ content, the lattice parameter ɑ and sintered density of sintered samples increase, while the real part of permeability and magnetic loss tangent decrease. Samples carried out at 1250°C for 4h resulted in materials with cubic spinel phase, but a small amount of SmFeO3 was also formed. Magnetic properties results showed that the super-exchange interaction between octahedral B sites and tetrahedral A sites was badly impaired and the net overall magnetic moment (m=mB-mA) has an obvious decrease. It was also found that in these compounds Fe-Fe interaction dominates, the Sm-Fe interaction (3d-4f coupling) having a minor effect.

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Periodical:

Advanced Materials Research (Volume 1053)

Pages:

97-102

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1053.97

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Online since:

October 2014

Authors:

Yong Wang Yan, Xiu Feng Fan

Keywords:

Magnetic Property, Microstructure, Ni-Zn Ferrites

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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