1. Department of Physics and Materials Science
2. São Carlos Institute of Physics
3. University of São Paulo (USP)
4. CEP: 13560-970 São Carlos
5. Brazil
6. Group of Advanced Ceramic Materials
7. Department of Physics
8. Federal University of Sergipe (UFS)
9. CEP: 49100-000 São Cristóvão
10. Department of Mechanical Engineering
11. University of Colorado at Boulder (UCB)
12. Boulder
13. USA