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<strong>A novel synthesis of core/shell Co0.5Ni0.5Fe2O4/SiO2 nanomaterial and the effect of SiO2 on its magnetic properties</strong>

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Title Statement <strong>A novel synthesis of core/shell Co0.5Ni0.5Fe2O4/SiO2 nanomaterial and the effect of SiO2 on its magnetic properties</strong>
 
Added Entry - Uncontrolled Name Tri, Nguyen ; Institute of Chemical Technology, Vietnam Academy of Science and Technology
 
Uncontrolled Index Term Co0.5Ni0.5Fe2O4/SiO2; Nanomaterial; Core/shell structure; Magnetic properties
 
Summary, etc. Co<sub>0.5</sub>Ni<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> nanoparticles have been synthesized by a stearic acid method. Core/shell Co<sub>0.5</sub>Ni<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>/SiO<sub>2</sub> nanomaterials at varying amount of SiO<sub>2</sub> are prepared by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) precursor. The composition phase and average crystallite size have been characterized by means of X-ray diffraction. The particle structure and morphology of the core–shell nanoparticles are determined using transmission electron microscopy (TEM). The presence of Si-O-Si bonds for both coated samples is confirmed through Fourier transform infrared spectroscopic. Results show a decreasing saturation magnetization (M<sub>s</sub>) when amount of TEOS is increased. The addition of SiO<sub>2</sub> at first instance enhance the coercivity (H<sub>c</sub>), and maximum H<sub>c</sub> is observed when 0.4 mL TEOS is added. However, adding more SiO<sub>2</sub> decrease the coercivity because the domain wall motion on the surface of nanoparticles is limited.
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2019-09-26 16:53:34
 
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http://op.niscair.res.in/index.php/IJCT/article/view/13409
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 26, ##issue.no## 2 (2019): Indian Journal of Chemical Technololgy
 
Language Note en
 
Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCT/article/download/13409/39077
http://op.niscair.res.in/index.php/IJCT/article/download/13409/465473719
http://op.niscair.res.in/index.php/IJCT/article/download/13409/465473721