1. Inorganic and Physical Chemistry Division, Faculty Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
2. Department Geowissenschaften, Universität Hamburg, Grindelallee 48, Hamburg 20146, Germany
3. National Research Center for Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
4. Photonics and Magnetic Division, Faculty Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia