Have a personal or library account? Click to login

Magnetic studies of 0.7(Fe2O3)/0.3(ZnO) nanocomposites in nanopowder form and dispersed in polymer matrix

Materials Science-Poland
Volume 34 (2016): Issue 2 (June 2016)
By:
Open Access
|May 2016

Figures & Tables

Fig. 1

SEM (left) and TEM (right) images of 0.7(Fe2O3)/0.3(ZnO) nanopowder.
SEM (left) and TEM (right) images of 0.7(Fe2O3)/0.3(ZnO) nanopowder.

Fig. 2

Temperature dependence of the magnetic susceptibility in ZFC and FC modes of 0.7(Fe2O3)/0.3(ZnO) nanopowder (a) and dispersed in polymer 0.7(Fe2O3)/0.3(ZnO) (b) measured in two different magnetic fields (100 Oe and 1000 Oe).
Temperature dependence of the magnetic susceptibility in ZFC and FC modes of 0.7(Fe2O3)/0.3(ZnO) nanopowder (a) and dispersed in polymer 0.7(Fe2O3)/0.3(ZnO) (b) measured in two different magnetic fields (100 Oe and 1000 Oe).

Fig. 3

Isothermal magnetization M(H) of nanopowder sample (a, b) and polymer sample (c, d). Solid line in (a) for T = 290 K is the fit to the modified Langevin function. (b) and (d) present magnetization in low magnetic fields (hysteresis loops).
Isothermal magnetization M(H) of nanopowder sample (a, b) and polymer sample (c, d). Solid line in (a) for T = 290 K is the fit to the modified Langevin function. (b) and (d) present magnetization in low magnetic fields (hysteresis loops).

Fig. 4

FMR spectra of 0.7(Fe2O3)/0.3(ZnO) nanopowder (a, b) and dispersed in polymer 0.7(Fe2O3)/0.3(ZnO) (c, d) recorded at a few different temperatures.
FMR spectra of 0.7(Fe2O3)/0.3(ZnO) nanopowder (a, b) and dispersed in polymer 0.7(Fe2O3)/0.3(ZnO) (c, d) recorded at a few different temperatures.

Fig. 5

Integrated intensity (left axis) of nanopowder (full squares) and polymer (full triangles) samples, and apparent resonance field (right axis) of nanopowder (open squares) and polymer (open triangles) samples.
Integrated intensity (left axis) of nanopowder (full squares) and polymer (full triangles) samples, and apparent resonance field (right axis) of nanopowder (open squares) and polymer (open triangles) samples.

Fig. 6

Experimental (dots) and fitted (line) FMR spectra, with two components of fitted line of 0.7(Fe2O3)/0.3(ZnO) nanocomposite at 15 K (a), 290 K (b) and the nanocomposite doped in the polymer PEN-b-PTMO at 17 K (c), 290 K (d).
Experimental (dots) and fitted (line) FMR spectra, with two components of fitted line of 0.7(Fe2O3)/0.3(ZnO) nanocomposite at 15 K (a), 290 K (b) and the nanocomposite doped in the polymer PEN-b-PTMO at 17 K (c), 290 K (d).

Fig. 7

Temperature dependence of the calculated true resonance field of the nanopowder (full and open squares) and the polymer (full and open triangles) samples.
Temperature dependence of the calculated true resonance field of the nanopowder (full and open squares) and the polymer (full and open triangles) samples.

Fig. 8

Temperature dependence of the calculated true linewidth of the nanopowder (full and open squares) and the polymer (full and open triangles) samples.
Temperature dependence of the calculated true linewidth of the nanopowder (full and open squares) and the polymer (full and open triangles) samples.

Fig. 9

Temperature dependence of the effective anisotropy field Ha calculated from equation 3 for both types of samples.
Temperature dependence of the effective anisotropy field Ha calculated from equation 3 for both types of samples.

Fig. 10

Heat flow of neat PEN-b-PTMO (full squares) and PEN-b-PTMO containing 0.1 % of the nanopowder (full triangles), mass loss of neat PEN-b-PTMO (open squares) and PEN-b-PTMO containing 0.1 % of the nanopowder (open triangles), in air (a) and in argon (b) atmosphere.
Heat flow of neat PEN-b-PTMO (full squares) and PEN-b-PTMO containing 0.1 % of the nanopowder (full triangles), mass loss of neat PEN-b-PTMO (open squares) and PEN-b-PTMO containing 0.1 % of the nanopowder (open triangles), in air (a) and in argon (b) atmosphere.
DOI: https://doi.org/10.1515/msp-2016-0032 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Journal RSS Feed
Language: English
Page range: 286 - 296
Submitted on: May 20, 2015
Accepted on: Jan 11, 2016
Published on: May 24, 2016
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
ferromagnetic resonance,
magnetization,
thermogravimetry,
zinc ferrite nanoparticles,
polymer nanocomposite
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2016 Janusz Typek, Kamil Wardal, Grzegorz Zolnierkiewicz, Anna Szymczyk, Nikos Guskos, Urszula Narkiewicz, Elzbieta Piesowicz, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Previous articleVolume 34 (2016): Issue 2 (June 2016)Next article