Annealing effects on the magnetic and structural properties of single-crystal TDAE-C60

Takashi Kambe, Yoshio Nogami, Kokichi Oshima

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29 Citations (Scopus)

Abstract

Annealing effects on the magnetic and structural properties of single-crystal TDAE-C60 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±0.1μB per C60. It was first found that the well-annealed crystal shows a structural phase transition around 180 K, probably associated with the orientational ordering of C60 molecules. On the other hand, the as-grown crystal undergoes no structural phase transition at least down to 30 K while the motion of C60 molecules is restricted below around 150 K. The possible relation between the low-temperature structure and the magnetic ordering is discussed.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume61
Issue number2
Publication statusPublished - Jan 1 2000

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Structural properties
Magnetic properties
Single crystals
Annealing
magnetic properties
Crystals
annealing
Phase transitions
single crystals
crystals
Magnetization
Molecules
molecules
magnetization
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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abstract = "Annealing effects on the magnetic and structural properties of single-crystal TDAE-C60 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±0.1μB per C60. It was first found that the well-annealed crystal shows a structural phase transition around 180 K, probably associated with the orientational ordering of C60 molecules. On the other hand, the as-grown crystal undergoes no structural phase transition at least down to 30 K while the motion of C60 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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T1 - Annealing effects on the magnetic and structural properties of single-crystal TDAE-C60

AU - Kambe, Takashi

AU - Nogami, Yoshio

AU - Oshima, Kokichi

PY - 2000/1/1

Y1 - 2000/1/1

N2 - Annealing effects on the magnetic and structural properties of single-crystal TDAE-C60 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±0.1μB per C60. It was first found that the well-annealed crystal shows a structural phase transition around 180 K, probably associated with the orientational ordering of C60 molecules. On the other hand, the as-grown crystal undergoes no structural phase transition at least down to 30 K while the motion of C60 molecules is restricted below around 150 K. The possible relation between the low-temperature structure and the magnetic ordering is discussed.

AB - Annealing effects on the magnetic and structural properties of single-crystal TDAE-C60 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±0.1μB per C60. It was first found that the well-annealed crystal shows a structural phase transition around 180 K, probably associated with the orientational ordering of C60 molecules. On the other hand, the as-grown crystal undergoes no structural phase transition at least down to 30 K while the motion of C60 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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