Annealing effects on the magnetic and structural properties of single-crystalTDAE−C60 | Zendy

Takashi Kambe | Zendy; Yoshio Nogami | Zendy; K. Oshima | Zendy

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Annealing effects on the magnetic and structural properties of single-crystalTDAE−C60

Author(s) -

Takashi Kambe,

Yoshio Nogami,

K. Oshima

Publication year - 2000

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.61.r862

Subject(s) - annealing (glass) , ferromagnetism , crystallography , crystal (programming language) , materials science , crystal structure , condensed matter physics , phase transition , magnetization , physics , chemistry , magnetic field , quantum mechanics , computer science , programming language , composite material

Annealing effects on the magnetic and structural properties of single-crystal TDAE-C-60 are investigated. When a crystal is well-annealed at 350 K, ferromagnetic ordering takes place below 16 K, though no magnetic phase transition is shown in as-grown crystal. The saturated magnetization was obtained to be 0.9+/-0.1 mu(B) per C-60. It was first found that the well-annealed crystal shows a structural phase transition around 180 K, probably associated with the orientational ordering of C-60 molecules. On the other hand, the as-grown crystal undergoes no structural phase transition at least down to 30 K while the motion of C-60 molecules is restricted below around 150 K. The possible relation between the low-temperature structure and the magnetic ordering is discussed.

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