1. STRUCTURE AND MAGNETIC PROPERTIES OF Co-DOPED SnO2 NANOWIRES.
- Author
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GOUTAM, U. K., SEN, SHASHWATI, JAGANNATH, SINGH, A. K., MUKUND, R., GUPTA, S. K., JAYAKUMAR, O. D., and TYAGI, A. K.
- Subjects
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MOLECULAR structure , *MAGNETIC properties of metals , *COBALT , *DOPED semiconductors , *MIXTURES , *NANOWIRES , *POWDER metallurgy , *CRYSTAL growth , *THERMAL analysis - Abstract
Co-doped SnO2 nanowires were grown by thermal evaporation of a mixture of Tin metal powder and CoCl2 · 6H2O in a tubular furnace. The growth occurs by vapor-solid growth mechanism. Nanowires grew along the sidewall of the alumina boat placed in the tubular furnace and the diameter of these nanowires (as was evident from scanning electron microscopy), was found to be in the range of 50 nm to 200 nm. Co was successfully doped in SnO2 lattice as revealed by X-ray diffraction data and was found to be in Co2+ state in the nanowires as detected by X-ray Photoelectron Spectroscopy measurements. Room temperature magnetic measurements, carried out using Vibrating Sample Magnetometer, indicated ferromagnetic behavior of the nanowires indicating their potential for spintronics applications. With increasing Co doping (upto 1%), the lattice parameters of SnO2 decreased and the saturation magnetization increased, suggesting a strong structure-magnetic property relationship. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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