H. Aghahasani Department of Physics, Payame Noor University, P.O. BOX 19395-3697, Tehran, Iran Iran, Islamic Republic of
S. Mohammadi Department of Physics, Payame Noor University, P.O. BOX 19395-3697, Tehran, Iran Iran, Islamic Republic of
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Z. Sajjadi Department of Physics, Payame Noor University, P.O. BOX 19395-3697, Tehran, Iran Iran, Islamic Republic of