Magnetic La1-xSrxMnO3 nanoparticles as contrast agents for MRI: The parameters affecting 1H transverse relaxation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10283337" target="_blank" >RIV/00216208:11310/15:10283337 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/15:00447891

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11051-014-2848-6" target="_blank" >http://dx.doi.org/10.1007/s11051-014-2848-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11051-014-2848-6" target="_blank" >10.1007/s11051-014-2848-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Magnetic La1-xSrxMnO3 nanoparticles as contrast agents for MRI: The parameters affecting 1H transverse relaxation

Popis výsledku v původním jazyce

Magnetic nanoparticles of the La1-xSrxMnO3 perovskite phase (x = 0.20-0.45) were synthesized by a sol-gel method followed by thermal and mechanical treatments. The particles were coated with a uniform silica shell, and differential centrifugation yieldeda product with high colloidal stability in water. XRD data showed that the mechanical processing did not affect the lattice parameters of the magnetic cores but only reduced their mean size dXRD. The magnetic properties of the bare particles were mainlycontrolled by the chemical composition and were also affected by the size of the particles. Subsequent silica coating led to an effective decrease in magnetization. Relaxometry measurements were focused primarily on colloids using magnetic cores of thesame size (dXRD = 20 nm) and different compositions, and coated with a shell measuring approximately 20 nm in thickness. The exceedingly high transverse relaxivities (r2(20oC) = 290-430 s-1mmol-1L at B0 = 0.5 T) of the samples exhibited p

Název v anglickém jazyce

Magnetic La1-xSrxMnO3 nanoparticles as contrast agents for MRI: The parameters affecting 1H transverse relaxation

Popis výsledku anglicky

Magnetic nanoparticles of the La1-xSrxMnO3 perovskite phase (x = 0.20-0.45) were synthesized by a sol-gel method followed by thermal and mechanical treatments. The particles were coated with a uniform silica shell, and differential centrifugation yieldeda product with high colloidal stability in water. XRD data showed that the mechanical processing did not affect the lattice parameters of the magnetic cores but only reduced their mean size dXRD. The magnetic properties of the bare particles were mainlycontrolled by the chemical composition and were also affected by the size of the particles. Subsequent silica coating led to an effective decrease in magnetization. Relaxometry measurements were focused primarily on colloids using magnetic cores of thesame size (dXRD = 20 nm) and different compositions, and coated with a shell measuring approximately 20 nm in thickness. The exceedingly high transverse relaxivities (r2(20oC) = 290-430 s-1mmol-1L at B0 = 0.5 T) of the samples exhibited p

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Nanoparticle Research

ISSN

1388-0764

e-ISSN

—

Svazek periodika

17

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

000352165900001

EID výsledku v databázi Scopus

2-s2.0-84921341845