Change search
ReferencesLink to record
Permanent link

Direct link
Synthesis and characterization of polypyrrole-BaFe12O19 nanocomposite
KTH, School of Information and Communication Technology (ICT), Material Physics, Functional Materials, FNM.ORCID iD: 0000-0001-5678-5298
2010 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, Vol. 493, no 1-2, 481-485 p.Article in journal (Refereed) Published
Abstract [en]

Polypyrrole-BaFe12O19 nanocomposite was successfully synthesized by an in situ polymerization of pyyrole in the presence of synthesized BaFe12O19 nanoparticles. Structural, morphological, electrical and magnetic properties of the nanocomposite were performed by XRD, FT-IR, TEM, TGA, VSM and ac conductivity measurements respectively. XRD analysis reveals the inorganic phase as bariumhexaferrite and TGA shows about 22 wt% loading of hexaferrite in the nanocomposite. FT-IR analysis indicates a successful conjugation of hexaferrite particles with polypyrrole. Magnetization measurements show that polypyrrole coating decreases the saturation magnetization of BaFe12O19 significantly. This reduction has been explained by the pinning of the surface spins by the possible adsorption of non-magnetic ions during the polymerization process. Interactions between the hard and impurity phases, determined using the Stoner-Wohlfarth theory, reveal that particles' single domain character and the coating destabilizes the remanence state of the polypyrrole-BaFe12O19 nanocomposite.

Place, publisher, year, edition, pages
2010. Vol. 493, no 1-2, 481-485 p.
Keyword [en]
Hexaferrites, Microwave absorbers, Citrate method, Conductivity, Magnetization, microwave-absorption properties, magnetic-properties, barium, hexaferrite, composites, particles, ferrite, nanoparticles, powders, bafe12o19, acids
National Category
Physical Chemistry Materials Engineering
URN: urn:nbn:se:kth:diva-19347DOI: 10.1016/j.jallcom.2009.12.135ISI: 000276054200099ScopusID: 2-s2.0-77249138149OAI: diva2:337394
Knut and Alice Wallenberg Foundation, UAW2004.0224
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-01-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Toprak, Muhammet S.
By organisation
Functional Materials, FNM
In the same journal
Journal of Alloys and Compounds
Physical ChemistryMaterials Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 85 hits
ReferencesLink to record
Permanent link

Direct link