Clusters of magnetic nanoparticles as contrast agents for MRI: effect of aggregation on transverse relaxivity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00450596" target="_blank" >RIV/68378271:_____/15:00450596 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22340/15:43899722 RIV/00216275:25310/15:39899658

Result on the web

<a href="http://dx.doi.org/10.1109/TMAG.2015.2438112" target="_blank" >http://dx.doi.org/10.1109/TMAG.2015.2438112</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TMAG.2015.2438112" target="_blank" >10.1109/TMAG.2015.2438112</a>

Result language

angličtina

Original language name

Clusters of magnetic nanoparticles as contrast agents for MRI: effect of aggregation on transverse relaxivity

Original language description

The effect of aggregation of magnetic nanoparticles on the transverse relaxivity (r2) is analyzed with respect to the size of clusters. The nanoparticles employed are based on La0.75Sr0.25MnO3 phase with the mean size of crystallites dXRD = 26 nm. Silica coating provides colloidally stable particles whose magnetic cores are mostly composed of clusters of manganite crystallites. The product is subjected to differential centrifugation and several size fractions, possessing the same dXRD but differing in the effective size of magnetic cores, are isolated. Thorough analyses of their size distributions by TEM and DLS are carried out together with SQUID magnetometry. The concentration of particles is accurately determined by AAS and a detailed study of r2 at the magnetic field B0 = 0.5 T is performed. The highest r2 values are clearly observed for mid-sized clusters and the temperature dependence of r2 resembles the evolution of magnetization with temperature.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

IEEE Transactions on Magnetics

ISSN

0018-9464

e-ISSN

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Volume of the periodical

51

Issue of the periodical within the volume

11

Country of publishing house

US - UNITED STATES

Number of pages

3

Pages from-to

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UT code for WoS article

000364770500373

EID of the result in the Scopus database

2-s2.0-84946150236