1. Materials Science and Technology Program, Department of Physics, School of Sciences, UNESP—São Paulo State University, Bauru 17033-360, SP, Brazil
2. Department of Physics, School of Sciences, UNESP—São Paulo State University, Bauru 17033-360, SP, Brazil
3. Department of Control and Automation Engineering, Institute of Science and Technology, UNESP—São Paulo State University, Sorocaba 18087-180, SP, Brazil