Hydrothermal Synthesis of SnO2/Fe3O4 Nanocomposites and Their Magnetic Property

Combining the optical and magnetic properties of tin oxide/iron oxide binary nanostructure would greatly broaden their application. Tin oxide/iron oxide nanocomposites were synthesized by a simple hydrothermal method. The changes of their structure and morphology were investigated by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectroscopy. Tin oxide/iron oxide nanocomposites were mainly in sheetlike morphology and highly encapsulated by the SnO 2 nanoparticles or nanorods. Increasing the reaction time would lead to the transition from nanosheets to nanorods. The zero-field-cooled and field-cooled measurements were carried out to examine the magnetic property of tin oxide/iron oxide nanocomposites. All of them revealed a paramagnetic behavior.