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Synthesis and magnetic characterization of Zn0.7Ni0.3Fe2O4 nanoparticles via microwave-assisted combustion route
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2010 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, Vol. 322, no 7, 866-871 p.Article in journal (Refereed) Published
Abstract [en]

We report on the synthesis of Zn0.7Ni0.3Fe2O4 nanoparticles via microwave assisted combustion route by using urea as fuel. XRD and FT-IR analyses confirm the composition and structure as spinel ferrite. The crystallite size estimated from XRD (16.4nm) and the magnetic core size(15.04nm) estimated from VSM agree well, while a slightly smaller magnetic diameterre reflects a very thin magnetically dead layer on the surface of the nanoparticles. Morphological investigation of the products was done by TEM which revealed the existence of irregular shapes such spherical, spherodial and polygon. Magnetization measurements performed on Zn0.7Ni0.3Fe2O4 nanoparticles showed that saturation was not attained at even in the high magnetic field. The sample shows superparamagnetic behavior at around the room temperature and ferromagnetic behavior below the blocking temperature which is measured as 284 K.

Place, publisher, year, edition, pages
2010. Vol. 322, no 7, 866-871 p.
Keyword [en]
Nanostructured magnetic material, Chemical synthesis, Fourier transform, infrared spectroscopy (FTIR), Vibrating sample magnetometer (VSM), Combustion synthesis, ni-zn ferrites, particle-size, structural-properties, glass behavior, powders, spinel, cofe2o4, urea, coprecipitation, microstructure
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-19115DOI: 10.1016/j.jmmm.2009.11.018ISI: 000273672700021ScopusID: 2-s2.0-73649136533OAI: diva2:337162
Knut and Alice Wallenberg Foundation, UAW2004.0224
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-01-27Bibliographically approved

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Toprak, Muhammet S.
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