Abstract Ni0. 5 Zn0. 5Fe2O4@ mesoporousSiO2 (NZF@ mSiO 2) core shell nanocarrier was 
synthesized by sol–gel method using tetraethyl orthosilicate (TEOS) and 
cetyltrimethylammonium bromide (CTAB) and characterized for different physicochemical 
properties. The structural and morphological properties were studied by X-ray powder 
diffraction (XRD), transmission electron microscope (TEM), and field emission scanning 
electron microscope (FESEM) techniques. XRD pattern and TEM micrographs confirm the

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