Journal
NEW JOURNAL OF CHEMISTRY
Volume 38, Issue 8, Pages 3678-3687Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nj00334a
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Combustion synthesized superparamagnetic La0.7Sr0 3MnO3 nanoparticles have been studied for magnetic fluid hyperthermia applications. The effect of the coating concentration of acrypol on the colloidal, magnetic and heating properties of L0.7Sr0 3MnO3 have been studied. Uncoated and acrypol coated samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, high resolution transmission electron microscopy and vibrating sample magnetometer studies. The power absorbed by acrypol coated nanoparticles suspended in phosphate buffer solution from a 265 kHz radio frequency field was measured as a function of coating concentration and field amplitude H. For H = 40.4 kA m(-1) the maximum specific absorption rate was 80.82 W g(-1) for 4% coating concentration. All results evidenced that among all the coated samples, 2, 4, 6 and 8% coating concentrations, the sample with 4% coating concentration shows the highest induced heating temperature, the highest specific absorption rate and the highest biocompatibility.
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