Annealing effects on organic ferromagnet C60 - TDAE

The annealing effects on the magnetic and structural properties for organic ferromagnet C60 - TDAE are reported. The ESR line-width for unannealed single crystal shows a large hysteresis behavior around 130K. For the well-annealed crystal, on the other hand, the line-width continuously changed with temperature. In addition, the room temperature structural analysis of the single crystal indicated that all the crystal axes, especially c-axis, shrunk after annealing.