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Magnetic and Cytotoxicity Properties of La1テ「ツ按遅SrxMnO3 (0テつテ「ツ可、テつxテつテ「ツ可、テつ0.5) Nanoparticles Prepared by a Simple Thermal Hydro-Decomposition

Daengsakul, Sujittra and Thomas, Chunpen and Thomas, Ian and Mongkolkachit, Charusporn and Siri, Sineenat and Amornkitbamrung, Vittaya and Maensiri, Santi (2009) Magnetic and Cytotoxicity Properties of La1テ「ツ按遅SrxMnO3 (0テつテ「ツ可、テつxテつテ「ツ可、テつ0.5) Nanoparticles Prepared by a Simple Thermal Hydro-Decomposition. Nanoscale Research Letters, 4 (8). pp. 839-845.

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Official URL: http://www.springerlink.com/content/g4771113776542...

Abstract

This study reports the magnetic and cytotoxicity properties of magnetic nanoparticles of La1テ「ツ按遅SrxMnO3 (LSMO) with xテつ=テつ0, 0.1, 0.2, 0.3, 0.4, and 0.5 by a simple thermal decomposition method by using acetate salts of La, Sr, and Mn as starting materials in aqueous solution. To obtain the LSMO nanoparticles, thermal decomposition of the precursor was carried out at the temperatures of 600, 700, 800, and 900テつテつーC for 6テつh. The synthesized LSMO nanoparticles were characterized by XRD, FT-IR, TEM, and SEM. Structural characterization shows that the prepared particles consist of two phases of LaMnO3 (LMO) and LSMO with crystallite sizes ranging from 20テつnm to 87テつnm. All the prepared samples have a perovskite structure with transformation from cubic to rhombohedral at thermal decomposition temperature higher than 900テつテつーC in LSMO samples of xテつテ「ツ可、テつ0.3. Basic magnetic characteristics such as saturated magnetization (MS) and coercive field (HC) were evaluated by vibrating sample magnetometry at room temperature (20テつテつーC). The samples show paramagnetic behavior for all the samples with xテつ=テつ0 or LMO, and a superparamagnetic behavior for the other samples having MS values of ~20テ「ツツ47テつemu/g and the HC values of ~10テ「ツツ40テつOe, depending on the crystallite size and thermal decomposition temperature. Cytotoxicity of the synthesized LSMO nanoparticles was also evaluated with NIH 3T3 cells and the result shows that the synthesized nanoparticles were not toxic to the cells as determined from cell viability in response to the liquid extract of LSMO nanoparticles.

Item Type:Article
Uncontrolled Keywords:Manganite - Nanoparticles - Synthesis - X-ray diffraction - Magnetic properties - Electron microscopy - Cytotoxicity
Subjects:Physical Science > Nanomagnetics
NanoSafety > Environment, health and safety aspects of nanotechnology
ID Code:6529
Deposited By:SPI
Deposited On:27 Jul 2009 17:01
Last Modified:27 Jul 2009 17:01

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