Magnetic properties and crystal structure of solvent-free Sc@C82 metallofullerene microcrystals

Yasuhiro Ito, Wataru Fujita, Toshiya Okazaki, Toshiki Sugai, Kunio Awaga, Eiji Nishibori, Masaki Takata, Makoto Sakata, Hisanori Shinohara

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Magnetic properties of solvent-free crystals of the endohedral Sc@C 82 are investigated by SQUID and X-ray powder diffraction. We find that the crystal is a paramagnet and the magnetic susceptibility decreases from 150 K with evidence of antiferromagnetic-like interactions by slow cooling. X-ray crystal analysis reveals the presence of a phase transition at 150 K, which is attributed to an orientational ordering transition of the fullerene molecules. At low temperatures we find a magnetic metastable state that can be controlled by the cooling rate. The metastable state can be formed by rapid cooling. The direction of Sc@C82 molecular axis in the crystals is disordered in the metastable state, and the susceptibility is higher than that in the slow cooling case at low temperature.

Original languageEnglish
Pages (from-to)1019-1024
Number of pages6
JournalChemPhysChem
Volume8
Issue number7
DOIs
Publication statusPublished - 2007 May 14
Externally publishedYes

Keywords

  • Magnetic properties
  • Metallofullerenes
  • Phase
  • Scandium
  • Transitions
  • X-ray diffraction

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Magnetic properties and crystal structure of solvent-free Sc@C<sub>82</sub> metallofullerene microcrystals'. Together they form a unique fingerprint.

Cite this