Affiliation: | a Thin Film Technology Laboratory, School of Chemical Engineering, Chonbuk National University, Duckjin-dong 1 ga, Chonju 561-756, South Korea b School of Material Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Tatsunokuchi, Ishikawa, 923-1292, Japan c Department of Physics, University of Pune, Pune 411007, India |