A New Superconducting Phase of Sodium Cobalt Oxide

A new superconducting sodium cobalt oxide (see Figure, left) has been synthesized through soft‐chemical modification using α‐NaCoO2 as a parent compound, in place of the γ‐Na0.7CoO2 used to make the first cobalt oxide superconductor (see Figure, right). A three‐layer periodicity of the CoO2 stacking...

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Published inAdvanced materials (Weinheim) Vol. 16; no. 21; pp. 1901 - 1905
Main Authors Takada, K., Sakurai, H., Takayama-Muromachi, E., Izumi, F., Dilanian, R. A., Sasaki, T.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 04.11.2004
WILEY‐VCH Verlag
Subjects
Superconductivity
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Summary:A new superconducting sodium cobalt oxide (see Figure, left) has been synthesized through soft‐chemical modification using α‐NaCoO2 as a parent compound, in place of the γ‐Na0.7CoO2 used to make the first cobalt oxide superconductor (see Figure, right). A three‐layer periodicity of the CoO2 stacking sequence exists in the present material, in contrast to a two‐layer one in the previous. The new oxide has a superconducting transition at 4.6 K.
Bibliography:istex:2E750EABC12AAB3830EE0A4D18488FCE529EAFBA
The authors thank Mr. Satoru Takenouchi for performing the ICP-AES and redox titrations. This study was partially supported by Grants-in-Aid for Scientific Research (B) from the Japan Society for the Promotion of Science (16340111).
ArticleID:ADMA200400756
ark:/67375/WNG-JL59LM3P-4
The authors thank Mr. Satoru Takenouchi for performing the ICP‐AES and redox titrations. This study was partially supported by Grants‐in‐Aid for Scientific Research (B) from the Japan Society for the Promotion of Science (16340111).
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SourceType-Scholarly Journals-1
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ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200400756