EPR and magnetic susceptibility measurements on (formula presented)

Cabir Terzioglu, Louisiana State University
D. A. Browne, Louisiana State University
R. G. Goodrich, Louisiana State University
A. Hassan, National High Magnetic Field Laboratory
Z. Fisk, National High Magnetic Field Laboratory


We report measurements of temperature and magnetic field dependent magnetic susceptibility and electron paramagnetic resonance in the paramagnetic phase of (formula presented) From calculations of the possible ground state level structure of the interacting (formula presented) electrons it is found that the fourfold degenerate (formula presented) is split into two doublets with equal g factors and an energy separation of the order of 30 K. © 2001 The American Physical Society.