Ferromagnetism and giant magnetoresistance in the rare-earth fullerides (formula presented)

Kenji Ishii, Akihiko Fujiwara, Hiroyoshi Suematsu, Yoshihiro Kubozono

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have studied crystal structure, magnetism, and electric transport properties of a europium fulleride (formula presented) and its Sr-substituted compounds, (formula presented) They have a bcc structure, which is an isostructure of other (formula presented) (formula presented) represents an alkali atom or an alkaline-earth atom). Magnetic measurements revealed that magnetic moment is ascribed to the divalent europium atom with (formula presented) spin, and a ferromagnetic transition was observed at (formula presented) In (formula presented) we also confirm the ferromagnetic transition by heat-capacity measurement. The striking feature in (formula presented) is very large negative magnetoresistance at low temperature; the resistivity ratio (formula presented) reaches almost (formula presented) at 1 K in (formula presented) Such large magnetoresistance is the manifestation of a strong (formula presented) interaction between conduction carriers on (formula presented) and (formula presented)(formula presented) electrons of Eu.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number13
DOIs
Publication statusPublished - Jan 1 2002

Fingerprint

fullerides
Giant magnetoresistance
Ferromagnetism
Rare earths
Europium
ferromagnetism
rare earth elements
Magnetoresistance
Atoms
Magnetic variables measurement
Alkalies
Magnetism
Magnetic moments
Transport properties
Specific heat
Crystal structure
Earth (planet)
Electrons
Temperature
europium

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ferromagnetism and giant magnetoresistance in the rare-earth fullerides (formula presented). / Ishii, Kenji; Fujiwara, Akihiko; Suematsu, Hiroyoshi; Kubozono, Yoshihiro.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 65, No. 13, 01.01.2002, p. 1-6.

Research output: Contribution to journalArticle

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