Structural and magnetic properties of Mn(x)Co(1-x)Fe(2)O(4) ferrite nanoparticles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F11%3A00372688" target="_blank" >RIV/61388980:_____/11:00372688 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jmmm.2010.09.049" target="_blank" >http://dx.doi.org/10.1016/j.jmmm.2010.09.049</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmmm.2010.09.049" target="_blank" >10.1016/j.jmmm.2010.09.049</a>

Result language
angličtina
Original language name
Structural and magnetic properties of Mn(x)Co(1-x)Fe(2)O(4) ferrite nanoparticles
Original language description
We report on the structural and magnetic properties of nanoparticles of Mn(x)Co(1-x)Fe(2)O(4) (x=0.1,0.5) ferrites produced by the glycothermal reaction. From the analysis of XRD spectra and TEM micrographs, particle sizes of the samples have been foundto be about 8 nm (for x=0.1) and 13 nm (for x=0.5). The samples were characterized by DC magnetization in the temperature range 5-380 K and in magnetic fields of up to 40 kOe using a SQUID magnetometer. Mossbauer spectroscopy results show that the samplewith higher Mn content has enhanced hyperfine fields after thermal annealing at 700 degrees C. There is a corresponding small reduction in hyperfine fields for the sample with lower Mn content. The variations of saturation magnetization, remnant magnetization and coercive fields as functions of temperature are also presented. Our results show evidence of superparamagnetic behaviour associated with the nanosized particles. Particle sizes appear to be critical in explaining the observed p
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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