Proceedings of the Korean Vacuum Society Conference (한국진공학회:학술대회논문집)
- 2012.02a
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- Pages.312-312
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- 2012
XAS Studies of Ion Irradaited MgO Thin Films
- Suk, Jae-Kwon (Nano Analysis Center, Korea Institute of Science and Technology) ;
- Gautam, Sanjeev (Nano Analysis Center, Korea Institute of Science and Technology) ;
- Song, Jin-Ho (Nano Analysis Center, Korea Institute of Science and Technology) ;
- Lee, Jae-Yong (Department of Physics, Yonsei University) ;
- Kim, Jae-Yeoul (Nano Analysis Center, Korea Institute of Science and Technology) ;
- Kim, Joon-Kon (Nano Analysis Center, Korea Institute of Science and Technology) ;
- Song, Jong-Han (Nano Analysis Center, Korea Institute of Science and Technology) ;
- Chae, Keun-Hwa (Nano Analysis Center, Korea Institute of Science and Technology)
- Published : 2012.02.08
Abstract
Magnesium oxide has become focus for research activities due to its use in magnetic tunnel junctions and for understanding of do ferromagnetism. Theoretical investigations on such type of system indicate that the presence of defects greater than a threshold value is responsible for the magnetic behaviour. It has also been shown experimentally that by decreasing the film thickness and size of nanoparticles, enhancement/increase in magnetization can be achieved. Apart from the change in dimension, swift heavy ions (SHI) are well known for creating defects and modifying the properties of the materials. In the present work, we have studied the irradiation induced effects in magnesium oxide thin film deposited on quartz substrate via X-ray absorption spectroscopy (XAS). Magnesium oxide thin films of thickness 50nm were deposited on quartz substrate by using e-beam evaporation method. These films were irradiated by 200 MeV Ag15+ ion beam at fluence of