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VLS and VS effect on ferromagnetic behaviour of SnO2 nanobelts

Butt, Faheem K. and Cao, Chuanbao and Ahmed, Rashid and Khan, Waheedsamraiz and Ali, Zulfiqar and Hussain, Sajad Tajammul and Idrees, Faryal and Tahir, Muhammad Nawaz (2014) VLS and VS effect on ferromagnetic behaviour of SnO2 nanobelts. Journal of Experimental Nanoscience, 9 (1). pp. 17-26. ISSN 1745-8080

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Official URL: http://dx.doi.org/10.1080/17458080.2013.765605

Abstract

Fabrication of SnO2 nanobelts has been carried out by employing vapour liquid solid (VLS) and vapour solid (VS) mechanism. Nanobelts obtained by VLS mechanism were fabricated at relatively low temperature using Fe powders as a catalyst by means of chemical vapour deposition (CVD) technique. Direct thermal evaporation of SnO2 nanobelts was carried out at 1350°C in the atmosphere of Argon gas via VS mechanism. In both cases, ramp rate was adjusted to 10°C/min. The structural, compositional and morphological characterisations of synthesised SnO2 nanobelts were conducted by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Magnetic behaviour of the nanobelts was studied by vibrating sample magnetometer (VSM). Cathodoluminescence (CL) spectra were studied using Renishaw Raman spectroscopy system. The growth of nanobelts is found to be homogeneous and dense. The nanobelts formed by VLS mechanism show ferromagnetic behaviour along with some other exciting results whereas the nanobelts formed by VS mechanism show a diamagnetic behaviour. The observed room temperature ferromagnetism in SnO2 nanobelts is superior to other oxides.

Item Type:Article
Uncontrolled Keywords:oxygen vacancies, semiconductors
Subjects:Q Science
Divisions:Science
ID Code:63221
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:18 Jun 2017 14:53
Last Modified:18 Jun 2017 14:53

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