1. Crystal Growth and Thin Film Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur 603203, India
2. Advanced Magnetic Materials Laboratory, Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
3. Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, Auckland Park 2006, South Africa
4. Department of Physics and Nanotechnology, Research Institute, SRM Institute of Science and Technology, Kattankulathur 603203, India