Effect of size on structural, optical and magnetic properties of SnO2 nanoparticles

被引：14

作者：

Selvi, E. Thamarai ^{[1
]}

Sundar, S. Meenakshi ^{[1
]}

机构：

[1] Sri Paramakalyani Coll, PG & Res Dept Phys, Alwarkurichi 627412, India

来源：

MATERIALS RESEARCH EXPRESS | 2017年 / 4卷 / 07期

关键词：

nanoparticle; diffraction; spectroscopy; ROOM-TEMPERATURE FERROMAGNETISM; LUMINESCENCE PROPERTIES; PHOTOLUMINESCENCE; NANORODS; CO; GREEN;

D O I：

10.1088/2053-1591/aa707d

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tin Oxide (SnO2) nanostructures were synthesized by a microwave oven assisted solvothermal method using with and without cetyl trimethyl ammonium bromide (CTAB) capping agent. XRD confirmed the pure rutile-type tetragonal phase of SnO2 for both uncapped and capped samples. The presence of functional groups was analyzed by Fourier transform infrared spectroscopy. Scanning electron microscopy shows the morphology of the samples. Transmission electron microscopy images exposed the size of the SnO2 nanostructures. Surface defect-related g factor of SnO2 nanoparticles using fluorescence spectroscopy is shown. For both uncapped and capped samples, UV-visible spectrum shows a blue shift in absorption edge due to the quantum confinement effect. Defect-related bands were identified by electron paramagnetic resonance (EPR) spectroscopy. The magnetic properties were studied by using vibrating sample magnetometer (VSM). A high value of magnetic moment 0.023 emu g(-1) at room temperature for uncapped SnO2 nanoparticles was observed. Capping with CTAB enhanced the saturation magnetic moment to high value of 0.081 emu g(-1) by altering the electronic configuration on the surface.

引用

页数：11

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