1. Postgraduate Program in Materials Science and Engineering, Federal University of Piauí, Teresina, Brazil
2. Department of Physics, Women University of Azad Jammu and Kashmir, Bagh, Pakistan
3. Federal Institute of Maranhão, Sao Luis, Brazil
4. School of Science and technology, Federal University of Rio Grande do Norte, Natal, Brazil
5. Sorocaba Technological College – FATEC, Sorocaba, Brazil
6. Federal University São Carlos – UFSCar, Sorocaba, Brazil
7. Department of Mecanics, Federal university of Rio Grande do Norte, Natal, Brazil