%0 Journal Article %A Zhazgul Kelgenbaeva and Emil Omurzak and Saadat Sulaimankulova and Tsutomu Mashimo %D 2013 %J International Journal of Materials and Metallurgical Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 78, 2013 %T Morphology and Magnetic Properties of Fe3O4 and Au@Fe3O4 Nanoparticles Synthesized by Pulsed Plasma in Liquid %U https://publications.waset.org/pdf/3995 %V 78 %X Spherical shaped magnetite (Fe3O4) and Au@Fe3O4 nanoparticles were successfully synthesized from Fe electrodes immersed in water with CTAB surfactant and HAuCl4 solution using simple method-pulsed plasma in liquid, without the use of dopants or special conditions for stabilization. Vibrating sample magnetometer indicated ferromagnetic behavior of particles at room temperature with coercivity and saturation magnetization of (Hc=105 Oe, Ms=6.83 emu/g) for Fe3O4 and (Hc=175, Ms=3.56emu/g) for Au@Fe3O4 nanoparticles. Structure and morphology of nanoparticles were characterized by X-ray Diffraction analysis and HR-TEM measurements. The cytotoxicity of nanoparticles was indicated using a XTT assay to be very low (cell viability: 98-89% with Fe3O4 and 99-91% for Au@Fe3O4 NPs). %P 459 - 462