%0 Journal Article
%T Measurements of Pulsed 532 nm Laser Breakdown Spectroscopy of Synthesized Magnetite Nanoferrofluid
%A Mohammad E. Khosroshahi
%A Maryam Tajabadi
%J World Journal of Nano Science and Engineering
%P 39-55
%@ 2161-4962
%D 2018
%I Scientific Research Publishing
%R 10.4236/wjnse.2018.83003
%X We describe the results of 532 nm
pulse laser-induced breakdown spectroscopy (LIBS) of two samples of magnetite nanoparticles
(SPIONs) nanoferrofluid synthesized at room (S1) and elevated temperatures (S2)
and at three different laser energy levels and pulse frequency. The size of
magnetite nanoparticles, size distribution, magnetic crystalline phase and
magnetization were <span style=\"font-family:Verdana;\">analyzed and measured
using transmission electron microscopy (TEM), X-ray </span><span style=\"font-family:Verdana;\">diffrac</span><span style=\"font-family:Verdana;\">tion spectroscopy (XRD) and vibrating sample
magnetometry (VSM). The SPIONs showed a distribution between 4</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">-</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">22 nm with a peak about 12 nm and saturation
magnetization of about 65 emu/g. The Saha-Boltzman</span><span style=\"font-family:Verdana;\">n analysis of spectra
for medium energy level (1050 mJ) yields plasma temperatures of (3881 ¡À 200) K
and (26</span><span style=\"font-family:Verdana;\">,</span><span style=\"font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">047 ¡À 200) K for Fe I and OV as the lowest and highest temperatures
respectively. A range of corresponding electron density (Ne&lt;sup&gt;-&lt;/sup&gt;</span><span style=\"font-family:Verdana;\">) of
(0.47</span></span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">-</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">6.80) ¡Á 10</span><sup><span style=\"font-family:Verdana;\">20</span></sup><span style=\"font-family:Verdana;\">, (0.58</span></span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">-</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">8.30) ¡Á 10</span><sup><span style=\"font-family:Verdana;\">20</span></sup><span style=\"font-family:Verdana;\"> and (0.69</span></span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">-</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">9.96) ¡Á 10</span><sup><span style=\"font-family:Verdana;\">20</span></sup><span style=\"font-family:Verdana;\"> cm<span style=\"font-family:Verdana;white-space:normal;\">&lt;sup&gt;-3&lt;/sup&gt;</span></span><span
%K Laser-Induced Breakdown Spectroscopy
%K Second Harmonic Generation
%K SPION
%K Nanoferrofluid
%K Elements Ratio
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=87560