Title: Laser induced structural modification in Fe-Na-B glass samples investigated by advanced XPS technique

Authors: Abdelkrim Mekki; Guldad Khan Khattak; Mohammed Ashraf Gondal

Addresses: Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia. ' Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia. ' Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

Abstract: The effect of laser irradiation from Nd:YAG laser on the glass structure in sodium borate glass containing Fe₂O₃ has been investigated by X-ray photoelectron spectroscopy (XPS). Core level spectra Fe 2p, Na 1s, B 1s and O 1s have been recorded and analysed. The general behaviour of the spectra indicate a decrease in intensity of the Fe 2p core level peaks implying a gradual loss of Fe ions from the surface of the sample with a change in laser wavelength. The O 1s peak showed a slight narrowing with increase in laser wavelength. The O 1s spectra were all curved fitted with two contributions from bridging oxygen (BO) and non-bridging oxygen (NBO). A model was introduced to explain the correlation between the disappearance of Fe ion from the glass surface and the narrowing of the O 1s spectra with increase in laser wavelength.

Keywords: materials processing; X-ray photoelectron spectroscopy; XPS; iron borate glasses; TM oxide glasses; laser beams; glass structures; structural modification; laser irradiation; Nd:YAG lasers.

DOI: 10.1504/IJSURFSE.2011.044389

International Journal of Surface Science and Engineering, 2011 Vol.5 No.5/6, pp.434 - 445

Received: 09 Apr 2011
Accepted: 10 Jun 2011
Published online: 14 Oct 2014 *

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