Novel metallic ferromagnet Sr2CoO4

J. Matsuno, Y. Okimoto, Z. Fang, X. Z. Yu, Y. Matsui, N. Nagaosa, H. Kumigashira, M. Oshima, M. Kawasaki, Y. Tokura

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We report on synthesis and electronic characterization of single-crystalline film of Sr2CoO4 with square-lattice CoO2 sheets (K2NiF4-type structure). In this compound, we have found both ferromagnetic and metallic behaviors with fairly high Curie temperature TC of ∼250 K, as contrasted by the superconductivity recently found in a triangular-lattice CoO2-sheet compound. The electronic structure of Sr2CoO4 was also investigated in terms of in situ photoemission spectroscopy.

Original languageEnglish
Pages (from-to)113-116
Number of pages4
JournalThin Solid Films
Issue number1-2
Publication statusPublished - 2005 Aug 22


  • Cobalt perovskites
  • Ferromagnetic metal
  • Laser ablation


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