Affiliation: | 1. Department of Physics, Isfahan University of Technology, P.O. Box 84156-83111, Isfahan, Iran 2. Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran 3. Physics Group, Department of Science, Qom University, Qom, Iran 4. Department of Materials Science and Engineering, Dezful Branch, Islamic Azad University, P.O. Box 313, Dezful, Iran
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