Core-shell La1−xSrxMnO3 nanoparticles as colloidal mediators for magnetic fluid hyperthermia
Core-shell nanoparticles consisting of La0.75Sr0.25MnO3 cores covered by silica were synthesized by a procedure consisting of several steps, including the sol-gel method in the presence of citric acid and ethylene glycol, thermal and mechanical treatment, encapsulation employing tetraethoxysilane an...
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Published in: | Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences Vol. 368; no. 1927; pp. 4389 - 4405 |
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Main Authors: | , , , , , , , , , , , |
Format: | Journal Article |
Language: | English |
Published: |
The Royal Society Publishing
28-09-2010
The Royal Society |
Subjects: | |
Online Access: | Get full text |
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Summary: | Core-shell nanoparticles consisting of La0.75Sr0.25MnO3 cores covered by silica were synthesized by a procedure consisting of several steps, including the sol-gel method in the presence of citric acid and ethylene glycol, thermal and mechanical treatment, encapsulation employing tetraethoxysilane and final separation by centrifugation in order to get the required size fraction. Morphological studies revealed well-separated particles that form a stable water suspension. Magnetic studies include magnetization measurements and investigation of the ferromagnetic-superparamagnetic-paramagnetic transition. Magnetic heating experiments in 'calorimetric mode' were used to determine the heating efficiency of the particles in water suspension and further employed for biological studies of extracellular and intracellular effects analysed by tests of viability. |
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Bibliography: | istex:61CB6D010643B3805C5D14F518A9084BE852765D ark:/67375/V84-67MHTDZ2-Z ArticleID:rsta20100123 href:rsta20100123.pdf Theme Issue 'Nanoparticles' compiled and edited by Nguyen T. K. Thanh, Simon Biggs and Jawwad A. Darr |
ISSN: | 1364-503X 1471-2962 |
DOI: | 10.1098/rsta.2010.0123 |