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Silica encapsulated manganese perovskite nanoparticles for magnetically induced hyperthermia without the risk of overheating
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SYSNO ASEP 0332064 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Silica encapsulated manganese perovskite nanoparticles for magnetically induced hyperthermia without the risk of overheating Title Nanočástice manganatého perovskitu obalené oxidem křemičitým pro magneticky indukovanou hypertermii bez rizika přehřátí Author(s) Kaman, Ondřej (FZU-D) RID, ORCID
Pollert, Emil (FZU-D)
Veverka, Pavel (FZU-D) RID, ORCID
Veverka, Miroslav (FZU-D) RID
Hadová, Eva (FZU-D)
Knížek, Karel (FZU-D) RID, ORCID
Maryško, Miroslav (FZU-D) RID
Kašpar, P. (CZ)
Klementová, Mariana (UACH-T) RID, SAI, ORCID
Grünwaldová, V. (CZ)
Vasseur, S. (FR)
Epherre, R. (FR)
Mornet, S. (FR)
Goglio, G. (FR)
Duguet, E. (FR)Source Title Nanotechnology. - : Institute of Physics Publishing - ISSN 0957-4484
Roč. 20, č. 27 (2009), 275610/1-275610/7Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords manganese perovskite ; hyperthermia ; nanoparticles Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects KAN200200651 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) KJB100100701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10100521 - FZU-D (2005-2011) AV0Z40320502 - UACH-T (2005-2011) UT WOS 000267089600022 DOI 10.1088/0957-4484/20/27/275610 Annotation Nanoparticles of manganese perovskite of the composition La0.75Sr0.25MnO3 uniformly coated with silica were prepared by encapsulation of the magnetic cores (mean crystallite size 24 nm) using tetraethoxysilane followed by fractionation. The resulting hybrid particles form a stable suspension in an aqueous environment at physiological pH and possess a narrow hydrodynamic size distribution. Both calorimetric heating experiments and direct measurements of hysteresis loops in the alternating field revealed high specific power losses, further enhanced by the encapsulation procedure in the case of the coated particles. The corresponding results are discussed on the basis of complex characterization of the particles and especially detailed magnetic measurements. Moreover, the Curie temperature (335 K) of the selected magnetic cores resolves the risk of local overheating during hyperthermia treatment. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2010
Number of the records: 1