Melting of the Na layers in solid Na0.8CoO2

M. Weller; A. Sacchetti; H. R. Ott; K. Mattenberger; B. Batlogg

doi:10.1103/PhysRevLett.102.056401

Melting of the Na layers in solid Na0.8CoO2

Strongly Correlated Electrons 2009-02-05 v2

Authors: M. Weller , A. Sacchetti , H. R. Ott , K. Mattenberger , B. Batlogg

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Abstract

Data of 23Na NMR spectra- and relaxation measurements are interpreted as suggesting that, upon increasing temperature the Na layers in Na0.8CoO2 adopt a 2D liquid state at T=291 K. The corresponding first order phase transition is preceded by a rapidly increasing mobility and diffusion of Na ions above 200K. Above 291 K the 23Na NMR response is similar to that previously observed in superionic conductors with planar Na layers.

Keywords

crystal growth and phase transitions phase transitions

Cite

@article{arxiv.0806.0493,
  title  = {Melting of the Na layers in solid Na0.8CoO2},
  author = {M. Weller and A. Sacchetti and H. R. Ott and K. Mattenberger and B. Batlogg},
  journal= {arXiv preprint arXiv:0806.0493},
  year   = {2009}
}

Comments

4 pages, 4 figures

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