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Berlin 2012 – scientific programme

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KR: Fachgruppe Kristallographie

KR 8: Poster – 100 years since the Laue experiment: Topical aspects of diffraction and scattering (Joint Session KR, BP, DF, GP, MA, MI, MM; related SYXD)

KR 8.4: Poster

Wednesday, March 28, 2012, 15:00–17:30, Poster E

Inter-layer disorder in sodium cobaltate — •David Jonathan Pryce Morris1, Alan Tennant1,2, Klaus Seiffert1,3, Esther Dudzik1, Dharmalingam Prabhakaran4, Jon Goff5, Michel Roger6, and Jon Wright71Helmholtz-Zentrum Berlin, Germany — 2TU-Berlin, Germany — 3Kiel University, Germany — 4Oxford University, UK — 5Royal Holloway, University of London, UK — 6CEA-Saclay, France — 7ESRF, France

Sodium Cobaltate is a layered material which has been studied as a potential battery material, has shown good thermoelectric properties and becomes superconducting when hydrated. The physical properties are dependent on sodium content and the ordering of sodium ions. Sodium ordering in NaxCoO2 has previously been observed to have long-range order. Using x-ray diffraction we have observed a phase with long-range in-plane order and inter-layer disorder. Here we will present the data giving a possible structural interpretation.

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