1. Department of Mechanical Engineering, Faculty of Engineering, Diponegoro University, Tembalang Campus, Semarang 50275, Indonesia
2. Department of Physics, Faculty of Education and Regional Studies, Fukui University, 9-1 Bunkyo 3-Chome, Fukui 910-8507, Japan
3. Integrated Research Institute, Tokyo Institute of Technology, 4259 Nagatsuda-cho, Midori-ku, Yokohama 226-8503, Japan
4. Physics of Magnetism and Photonics Group, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, 10 Ganesha, Bandung 40132, Indonesia