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Citation: Xu Zhi-Jin, Yan Ji-Min. Phase Transition in Solid C₆₀[J]. Acta Physico-Chimica Sinica, ;1995, 11(11): 991-996. doi: 10.3866/PKU.WHXB19951107 shu

Phase Transition in Solid C₆₀

Xu Zhi-Jin ,
Yan Ji-Min

1.
Institute of Chemistry,Academia Sinica,Beijing 100080

Received Date: 31 December 1994
Available Online: 15 November 1995

The interactions between C60 molecules in solid state are calculated by the potential model (exp-6-1). The states of C6o molecules in solid are given at room temperature and at lower temperature. C60 molecule rotates rapidly at room temperature; the rotation rate decreases and the rotational axes tend to ordering as temperature becomes lower. And at about 260K the structure under es a first-order phase transiton from the high-temperature FCC phase to the ordered SC structure. The molecule equivalence above 260K is now broken by rorating the four molecules through the same angle but around different <111> axes: the molecule at (0,0,0) around [111], that at (1/2,1/2,0) around [111], that at (0,1/2,1/2) around [111] and at (1/2,0.1/2) around [111]. At about 90K, the system under es a second-order phase transition-----glass transition.
- C₆₀,
- Phase transition,
- (exp-6-1)potential model,
- Orientational transition
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Phase Transition in Solid C₆₀