1. Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
2. Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, Squires Way, Wollongong, New South Wales 2500, Australia
3. International Iberian Nanotechnology Laboratory (INL), Avenida Mestre José Veiga, 4715-330 Braga, Portugal