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The magnetic and hyperthermia studies of bare and silica-coated La.sub.0.75./sub.Sr.sub.0.25./sub.MnO.sub.3./sub. nanoparticles
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SYSNO ASEP 0367343 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The magnetic and hyperthermia studies of bare and silica-coated La0.75Sr0.25MnO3 nanoparticles Author(s) Kaman, Ondřej (FZU-D) RID, ORCID
Veverka, Pavel (FZU-D) RID, ORCID
Jirák, Zdeněk (FZU-D) RID, ORCID, SAI
Maryško, Miroslav (FZU-D) RID
Knížek, Karel (FZU-D) RID, ORCID
Veverka, Miroslav (FZU-D) RID
Kašpar, P. (CZ)
Burian, M. (CZ)
Šepelák, V. (DE)
Pollert, Emil (FZU-D)Source Title Journal of Nanoparticle Research. - : Springer - ISSN 1388-0764
Roč. 13, č. 3 (2011), s. 1237-1252Number of pages 16 s. Language eng - English Country NL - Netherlands Keywords perovskite manganite ; magnetic nanoparticles ; hyperthermia ; size distribution ; synthesis ; nanomedicine Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects KAN200200651 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10100521 - FZU-D (2005-2011) UT WOS 000289003000033 DOI 10.1007/s11051-010-0117-x Annotation The mag. nanoparticles of La0.75Sr0.25MnO3 perovskite manganite with a controlled size were prepared via sol–gel procedure,followed by thermal treatment and subsequent mechanical processing of the resulting raw product.The prepared materials were studied by the XRD and TEMmethods and probed by DC magnetic measurements.The nanoparticles of the mean crystallite sizes 11–40 nm exhibit T in the range of ≈310–347 K and the sample possessing 20-nmcrystalliteswas identified as the most suitable for hyperthermia experiments.In order to obtain a colloidally stable suspension and prevent toxic effects, the selected magnetic cores were further encapsulated into silica shell using tetraethoxysilane.The detailed studies were focused on the comparison of the raw product,the bare nanoparticles after mechanical processing and the silica-coated nanoparticles,dealing also with effects of size distribution and magnetic interactions. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2012
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