1. Department of Chemistry and Biochemistry Florida State University Tallahassee FL 32306 USA
2. Department of Chemical and Biomedical Engineering FAMU‐FSU College of Engineering Tallahassee FL 32310 USA
3. National High Magnetic Field Laboratory Florida State University Tallahassee FL 32310 USA
4. Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
5. Department of Physics East China Normal University Shanghai 200241 China
6. Materials Science and Engineering Program Florida State University Tallahassee FL 32306 USA