The Jahn–Teller Effect and Fullerene Ferromagnets
- 193 Downloads
The discovery of C60 and other members of the fullerene family opened new horizons in the design and synthesis of new molecular-based materials. The discovery that TDAE-C60 exhibits a transition to a ferromagnetic ground state at an unusually high transition temperature TC=16 K has been particularly exciting. Intensive work for more than a decade revealed a unique correlation between spin and orientational ordering of Jahn–Teller-distorted C60– ions. In this chapter, we first review the physics of the Jahn–Teller effect in C60n– ions. Then we describe the structural, electronic, and magnetic properties of TDAE-C60. We also show magnetic resonance data, which provide strong evidence for the correlation between orbital and spin ordering in TDAE-C60 and allow for the determination of the Jahn–Teller dynamics.
Unable to display preview. Download preview PDF.