The Jahn–Teller Effect and Fullerene Ferromagnets

  • Denis Arčon
  • Robert BlincEmail author
Part of the Structure and Bonding book series (STRUCTURE, volume 109)


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.

Fullerenes Ferromagnetism Jahn–Teller effect Magnetic resonance Muon spin relaxation Structural properties Orbital ordering 


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Authors and Affiliations

  1. 1.Faculty of Mathematics and PhysicsUniversity of LjubljanaLjubljanaSlovenia
  2. 2.Josef Stefan InstituteLjubljanaSlovenia

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