1 International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Ibaraki, Tsukuba 305-0047, Japan 2Advanced Materials Research Laboratory, School of Materials Science and Engineering, Gwangju Institute of Science and Technology, (GIST), Gwangju 500-712, Republic of Korea 3Department of Physics, University of Pune, Pune 411 007, India 4Department of Physics and Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, PR 00931-3343, USA
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Shinde et al. (2012) studied this question.
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