Počet záznamů: 1

Titania-coated manganite nanoparticles: synthesis of the shell, characterization and MRI properties

SYSNO ASEP	0473952
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Titania-coated manganite nanoparticles: synthesis of the shell, characterization and MRI properties
Tvůrce(i)	Jirák, Zdeněk (FZU-D)_{RID, ORCID, SAI} Kuličková, Jarmila (FZU-D)_ORCID Herynek, Vít (UEM-P) Maryško, Miroslav (FZU-D)_RID Koktan, Jakub (FZU-D)_RID Kaman, Ondřej (FZU-D)_{RID, ORCID}
Celkový počet autorů	6
Zdroj.dok.	Journal of Magnetism and Magnetic Materials. - : Elsevier - ISSN 0304-8853 Roč. 427, Apr (2017), s. 245-250
Poč.str.	6 s.
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	magnetic nanoparticles ; core-shell nanoparticles ; titania coating ; perovskite manganite ; magnetic resonance imaging ; transverse relaxivity
Vědní obor RIV	BM - Fyzika pevných látek a magnetismus
Obor OECD	Condensed matter physics (including formerly solid state physics, supercond.)
CEP	GA15-10088S GA ČR - Grantová agentura ČR
	GA16-04340S GA ČR - Grantová agentura ČR
Institucionální podpora	FZU-D - RVO:68378271 ; UEM-P - RVO:68378041
UT WOS	000397199400044
EID SCOPUS	85005993324
DOI	10.1016/j.jmmm.2016.10.097
Anotace	Novel procedure for coating of oxide nanoparticles with titania is developed and applied to magnetic cores of perovskite manganite. Bare particles of the ferromagnetic La0.65Sr0.35MnO3 phase, possessing high magnetization, M10 kOe(4.5 K) = 63.5 emu g-1, and Curie temperature, TC = 355 K, are synthesized by sol-gel procedure and subsequently coated with titania. Further, a comparative silica-coated product is prepared. In order to analyse the morphology, colloidal stability, and surface properties of these two types of coated particles, a detailed study by means of TEM, DLS, zeta-potential measurements, and IR spectroscopy is carried out. The experiments on the titania-coated sample reveal a continuous though porous character of the TiO2 shell. Finally, the relaxometric study at the magnetic field of 0.5 T, performed to quantity the transverse relaxivity and its temperature dependence, reveals important differences between the titania-coated and silica-coated nanoparticles.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2018

Počet záznamů: 1