Metal-nonmetal transition in Ge doped spinel-type CuCr2 S4

Yoichi Kamihara, Masanori Matoba, T. Kyomen, M. Itoh

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

CuCr2 S4 shows a p-type metallic conductivity and ferromagnetism with Curie temperatures Tc of 375 K, and exhibits magnetic anomaly at 84 K ( = Tm ). The partial Ge substitution for Cu in CuCr2 S4 greatly reduces Tc. Moreover Ge-substitution gives metal-nonmetal transition at x = frac(1, 8) in Cu1 - x Gex Cr2 S4. These results suggest that Cr 3d band filling control can be expected to give functional magnetoelectric transport properties in CuCr2 S4.

Original languageEnglish
Pages (from-to)1120-1121
Number of pages2
JournalPhysica B: Condensed Matter
Volume378-380
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2006 May 1

Fingerprint

Nonmetals
spinel
Substitution reactions
Metals
transition metals
substitutes
Ferromagnetism
magnetic anomalies
Curie temperature
Transport properties
ferromagnetism
transport properties
conductivity
spinell

Keywords

  • Anomalous magnetism
  • Ferromagnetic order
  • Magnetoresistance
  • Thiospinel
  • Transition metal

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Metal-nonmetal transition in Ge doped spinel-type CuCr2 S4 . / Kamihara, Yoichi; Matoba, Masanori; Kyomen, T.; Itoh, M.

In: Physica B: Condensed Matter, Vol. 378-380, No. SPEC. ISS., 01.05.2006, p. 1120-1121.

Research output: Contribution to journalArticle

Kamihara, Yoichi ; Matoba, Masanori ; Kyomen, T. ; Itoh, M. / Metal-nonmetal transition in Ge doped spinel-type CuCr2 S4 In: Physica B: Condensed Matter. 2006 ; Vol. 378-380, No. SPEC. ISS. pp. 1120-1121.
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