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Magnetic properties of nickel-zinc ferrite nanoparticles synthesized by coprecipitation

✍ Scribed by Corral-Flores, V. ;Bueno-Baqués, D. ;Paraguay-Delgado, F. ;Botez, C. E. ;Ibarra-Gómez, R. ;Ziolo, R.

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
210 KB
Volume
204
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

The influence of Zn substitution in the magnetic properties of a nanoscale system Ni~1–x~ Zn~x~ Fe~2~O~4~ (where x = 0.0, 0.25, 0.50 and 0.75) was studied. The ferrites were synthesized by the coprecipitation technique. Transmission electron microscopy revealed a particle size around 4–15 nm, increasing with Zn content. FC/ZFC curves showed a typical superparamagnetic behavior in all samples. It was found that Zn substitution affects both the blocking temperature and the magnetization. The maximum magnetization at room temperature was 48 emu/g for the sample x = 0.50. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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