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Umeå University, Faculty of Science and Technology, Department of Physics.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 40 credits / 60 HE creditsStudent thesis
Abstract [en]

Raman spectroscopy is highly sensitive to study the structural properties of nanographite (NG) materials. An experiment was conducted to assess the spectrum of multi-shell nanographite at different temperature and laser treatments. Four samples with different temperature were used. The range of temperature used was 1500-1650 oC. All samples were subjected to different laser treatments like 488, 514, 633 and 785 nm respectively. The spectrum of nanographite was observed by using the Raman spectroscopy. The 1st and 2nd order spectra of NG were evaluated by using the Voigt analysis. The variations in the intensities of D and G bands were analyzed. The decrease of D band width with heat treatment was observed. The peak 1523 cm-1 exhibited more and more reduction with increase in temperature treatments. Temperature induced the conversion of nanodiamond to nanographite.

Place, publisher, year, edition, pages
2015. , 49 p.
National Category
Physical Sciences
URN: urn:nbn:se:umu:diva-108425OAI: diva2:852894
Subject / course
Fysik - examensarbete III
Educational program
Master's Programme in Physics
Available from: 2015-09-14 Created: 2015-09-10 Last updated: 2015-09-14Bibliographically approved

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Ali, Muhammad
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