Strontium ordering, structural modulation in layered hexagonal Sr {sub x}CoO{sub 2} and physical properties of Sr{sub 0.35}CoO{sub 2}
Journal Article
·
· Materials Research Bulletin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China)
Layered Sr{sub 0.35}CoO{sub 2} has been synthesized by means of an ion exchange reaction from Na{sub 0.7}CoO{sub 2}. Resistivity measurements show that this material can be either metallic or semiconducting depending on the annealing conditions. The magnetic susceptibility of the sample increases with decreasing temperature, showing a Curie-Weiss behavior in high temperatures. Transmission electron microscopy observations reveal the presence of two superstructures arising respectively from the intercalated Sr-ordering (a compositional modulation) with q {sub 1} = a*/3 + b*/3 and a periodic structural distortion (a transverse structural modulation) with q {sub 2} = a*/2.
- OSTI ID:
- 20900949
- Journal Information:
- Materials Research Bulletin, Vol. 42, Issue 1; Other Information: DOI: 10.1016/j.materresbull.2006.05.007; PII: S0025-5408(06)00205-4; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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