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

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• 作者：Zdeněk Jirá ; k^a ; Jarmila Kuličková ; ^a ; Ví ; t Herynek^b ; Miroslav Mary&scaron ; ko^a ; Jakub Koktan^a ; ^c ; Ondřej Kaman^a ; ^{kamano@seznam.cz}
• 关键词：Magnetic nanoparticles ; Core-shell nanoparticles ; Titania coating ; Perovskite manganite ; Magnetic resonance imaging ; Transverse relaxivity
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：427
• 期：Complete
• 页码：245-250
• 全文大小：1098 K
• 卷排序：427

文摘

Magnetic nanoparticles of perovskite La0.65Sr0.35MnO3 phase are coated with TiO2. The titania forms a continuous and amorphous shell and provides colloidal stability. Morphology and surface properties are compared to a silica-coated product. MRI properties of both the titania- and silica-coated particles are studied at 0.5 T. The temperature dependence of r2 is strongly affected by the type of coating.