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Synthesis, structural and electrical properties of triethylene glycol (TREG) stabilized Mn0.2Co0.8Fe2O4 NPs
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2012 (English)In: Materials research bulletin, ISSN 0025-5408, E-ISSN 1873-4227, Vol. 47, no 3, 537-543 p.Article in journal (Refereed) Published
Abstract [en]

Triethylene glycol (TREG) stabilized Mn0.2Co0.8Fe2O4 NPs was synthesized by a glycothermal reaction. XRD analysis identified the product as Mn0.2Co0.8Fe2O4 with a high phase purity. Nano-sized particles with an average size of about 6-8 nm were obtained with nearly single crystalline nature with TEM analysis. Superparamagnetic-like behavior of TREG stabilized Mn0.2Co0.8Fe2O4 NPs was observed by VSM. The binding between TREG and Mn0.2Co0.8Fe2O4 NPs was investigated with FT-IR and found to be via O on the TREG and NP surface. TG analysis indicated that the Mn0.2Co0.8Fe2O4 NP content was about 40%, with a TREG-shell content to be around 60%. Overall conductivity of the nanocomposite is in the range of 10(-10) to 10(-7) S cm(-1) with a strong dependence on temperature and frequency, indicating ionic conductivity. The nanocomposite exhibited lower epsilon' and epsilon '' compared to TREG stabilized Mn0.2Co0.8Fe2O4 NPs due to the doping of co-doping of manganese and cobalt.

Place, publisher, year, edition, pages
2012. Vol. 47, no 3, 537-543 p.
Keyword [en]
Magnetic materials, Chemical synthesis, Impedance spectroscopy, Dielectric properties, Magnetic properties
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-93936DOI: 10.1016/j.materresbull.2011.12.050ISI: 000301994100006Scopus ID: 2-s2.0-84857502392OAI: oai:DiVA.org:kth-93936DiVA: diva2:524828
Note
QC 20120504Available from: 2012-05-04 Created: 2012-05-03 Last updated: 2017-12-07Bibliographically approved

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Toprak, Muhammet S.

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