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 SnO2 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.