Authors
B.B.V.S. Vara Prasad
Department of Physics, MVGR College of Engineering, Vizianagaram, India
Department of Physics, JNTU Kakinada, Kakinada, India
K.V. Ramesh
Department of Electronics & Physics, GITAM Institute of Science, GITAM Deemed to be University, Visakhapatnam, India
A. Srinivas
Defence Metallurgical Research Laboratory, Hyderabad, India