A New Superconducting Phase of Sodium Cobalt Oxide | Zendy

Takada K. | Zendy; Sakurai H. | Zendy; TakayamaMuromachi E. | Zendy; Izumi F. | Zendy; Dilanian R. A. | Zendy; Sasaki T. | Zendy

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A New Superconducting Phase of Sodium Cobalt Oxide

Author(s) -

Takada K.,

Sakurai H.,

TakayamaMuromachi E.,

Izumi F.,

Dilanian R. A.,

Sasaki T.

Publication year - 2004

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.200400756

Subject(s) - superconductivity , materials science , oxide , cobalt , cobalt oxide , stacking , phase (matter) , sodium oxide , layer (electronics) , sodium , inorganic chemistry , nanotechnology , condensed matter physics , crystallography , metallurgy , nuclear magnetic resonance , chemistry , physics , organic chemistry

A new superconducting sodium cobalt oxide (see Figure, left) has been synthesized through soft‐chemical modification using α‐NaCoO 2 as a parent compound, in place of the γ‐Na 0.7 CoO 2 used to make the first cobalt oxide superconductor (see Figure, right). A three‐layer periodicity of the CoO 2 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.

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