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Title: Crystal structure and elementary properties of Na{sub x}CoO{sub 2} (x=0.32, 0.51, 0.6, 0.75, and 0.92) in the three-layer NaCoO{sub 2} family

Abstract

The crystal structures of Na{sub x}CoO{sub 2} phases based on three-layer NaCoO{sub 2}, with x=0.32, 0.51, 0.60, 0.75, and 0.92, determined by powder neutron diffraction, are reported. The structures have triangular CoO{sub 2} layers interleaved by sodium ions, and evolve with variation in Na content in a more complex way than has been observed in the two-layer Na{sub x}CoO{sub 2} system. The phases with highest and lowest Na content studied (x=0.92 and 0.32) are trigonal, with three CoO{sub 2} layers per cell and octahedral Na ion coordination. The intermediate compositions have monoclinic structures. The x=0.75 compound has one CoO{sub 2} layer per cell, with Na in octahedral coordination and an incommensurate superlattice. The x=0.6 and 0.51 phases are also single layer, but the Na is found in trigonal prismatic coordination. The magnetic behavior of the phases is similar to that observed in the two-layer system. Both the susceptibility and the electronic contribution to the specific heat are largest for x=0.6.

Authors:
; ; ;  [1];  [2];  [3];  [1];  [4];  [5]; ;  [6]
  1. Department of Chemistry, Princeton University, Princeton, New Jersey 08540 (United States)
  2. National Centre for HREM, Department of Nanoscience, Delft Institute of Technology, Al Delft, The Netherlands (Netherlands)
  3. NIST Center for Neutron Research, NIST, Gaithersburg, Maryland 20899 (United States)
  4. (Japan)
  5. Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974 (United States)
  6. Department of Physics, Princeton University, Princeton, New Jersey 08540 (United States)
Publication Date:
OSTI Identifier:
20788155
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 73; Journal Issue: 17; Other Information: DOI: 10.1103/PhysRevB.73.174104; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CONCENTRATION RATIO; LAYERS; MAGNETIC SUSCEPTIBILITY; MONOCLINIC LATTICES; NEUTRON DIFFRACTION; POWDERS; SODIUM COMPOUNDS; SODIUM IONS; SPECIFIC HEAT; SUPERLATTICES

Citation Formats

Viciu, L., Bos, J. W. G., Foo, M. L., Cava, R. J., Zandbergen, H. W., Huang, Q., Ishiwata, S., Department of Applied Physics, Waseda University, Ookubo, Shinjuku, Tokyo, 169-8555, Ramirez, A. P., Lee, M., and Ong, N. P. Crystal structure and elementary properties of Na{sub x}CoO{sub 2} (x=0.32, 0.51, 0.6, 0.75, and 0.92) in the three-layer NaCoO{sub 2} family. United States: N. p., 2006. Web. doi:10.1103/PHYSREVB.73.1.
Viciu, L., Bos, J. W. G., Foo, M. L., Cava, R. J., Zandbergen, H. W., Huang, Q., Ishiwata, S., Department of Applied Physics, Waseda University, Ookubo, Shinjuku, Tokyo, 169-8555, Ramirez, A. P., Lee, M., & Ong, N. P. Crystal structure and elementary properties of Na{sub x}CoO{sub 2} (x=0.32, 0.51, 0.6, 0.75, and 0.92) in the three-layer NaCoO{sub 2} family. United States. doi:10.1103/PHYSREVB.73.1.
Viciu, L., Bos, J. W. G., Foo, M. L., Cava, R. J., Zandbergen, H. W., Huang, Q., Ishiwata, S., Department of Applied Physics, Waseda University, Ookubo, Shinjuku, Tokyo, 169-8555, Ramirez, A. P., Lee, M., and Ong, N. P. Mon . "Crystal structure and elementary properties of Na{sub x}CoO{sub 2} (x=0.32, 0.51, 0.6, 0.75, and 0.92) in the three-layer NaCoO{sub 2} family". United States. doi:10.1103/PHYSREVB.73.1.
@article{osti_20788155,
title = {Crystal structure and elementary properties of Na{sub x}CoO{sub 2} (x=0.32, 0.51, 0.6, 0.75, and 0.92) in the three-layer NaCoO{sub 2} family},
author = {Viciu, L. and Bos, J. W. G. and Foo, M. L. and Cava, R. J. and Zandbergen, H. W. and Huang, Q. and Ishiwata, S. and Department of Applied Physics, Waseda University, Ookubo, Shinjuku, Tokyo, 169-8555 and Ramirez, A. P. and Lee, M. and Ong, N. P.},
abstractNote = {The crystal structures of Na{sub x}CoO{sub 2} phases based on three-layer NaCoO{sub 2}, with x=0.32, 0.51, 0.60, 0.75, and 0.92, determined by powder neutron diffraction, are reported. The structures have triangular CoO{sub 2} layers interleaved by sodium ions, and evolve with variation in Na content in a more complex way than has been observed in the two-layer Na{sub x}CoO{sub 2} system. The phases with highest and lowest Na content studied (x=0.92 and 0.32) are trigonal, with three CoO{sub 2} layers per cell and octahedral Na ion coordination. The intermediate compositions have monoclinic structures. The x=0.75 compound has one CoO{sub 2} layer per cell, with Na in octahedral coordination and an incommensurate superlattice. The x=0.6 and 0.51 phases are also single layer, but the Na is found in trigonal prismatic coordination. The magnetic behavior of the phases is similar to that observed in the two-layer system. Both the susceptibility and the electronic contribution to the specific heat are largest for x=0.6.},
doi = {10.1103/PHYSREVB.73.1},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 17,
volume = 73,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}