Magnetic properties of doped CeO2 nanoparticles and CeO2-Fe2O3 mixed oxides

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00389410" target="_blank" >RIV/68378271:_____/12:00389410 - isvavai.cz</a>
Alternative codes found
RIV/61388980:_____/12:00389410
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Magnetic properties of doped CeO2 nanoparticles and CeO2-Fe2O3 mixed oxides
Original language description
We have investigated magnetic properties of CeO2 nanoparticles and CeO2/SiO2 nanocomposites doped by various magnetic metal oxide ions (Fe, Gd, Sm, Nd). Samples were obtained by co-precipitation and sol-gel method. Particle size has been obtained as 5 -25 nm for nanocomposite and 25 - 100 nm for nanoparticles increasing with the increase of the annealing temperature. Detailed measurements of magnetization demonstrate paramagnetic state in the majority of the doped samples with maximum magnetization decreasing with the decrease of effective magnetic moment of the dopant ions from Gd3+ to Nd3+. It has been also observed, that the high-coercivity ?-Fe2O3 forms in CeO2-Fe2O3/SiO2 nanocomposite for higher concentration of the Fe ions (Ce/Fe/Si ratio equalto 1/2/9) and for the highest annealing temperature.
Czech name
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Czech description
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Project
<a href="/en/project/GAP108%2F10%2F1250" target="_blank" >GAP108/10/1250: Multifunctional nanoparticles: smart preparation methods and study of their physical properties</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
WDS´12 - Proceedings of Contributed Papers, Part III
ISBN
978-80-7378-226-9
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
12-17
Publisher name
Matfyzpress
Place of publication
Praha
Event location
Praha
Event date
May 29, 2012
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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