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Title: Strontium ordering, structural modulation in layered hexagonal Sr {sub x}CoO{sub 2} and physical properties of Sr{sub 0.35}CoO{sub 2}

Abstract

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.

Authors:
 [1];  [2];  [2];  [2];  [2];  [2];  [2]
  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China). E-mail: hxyang@blem.ac.cn
  2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China)
Publication Date:
OSTI Identifier:
20900949
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 42; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; COBALT OXIDES; INORGANIC COMPOUNDS; ION EXCHANGE; MAGNETIC SUSCEPTIBILITY; MICROSTRUCTURE; MODULATION; PERIODICITY; STRONTIUM; STRONTIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Yang, H.X., Shi, Y.G., Guo, Y.Q., Liu, X., Xiao, R.J., Luo, J.L., and Li, J.Q. Strontium ordering, structural modulation in layered hexagonal Sr {sub x}CoO{sub 2} and physical properties of Sr{sub 0.35}CoO{sub 2}. United States: N. p., 2007. Web. doi:10.1016/j.materresbull.2006.05.007.
Yang, H.X., Shi, Y.G., Guo, Y.Q., Liu, X., Xiao, R.J., Luo, J.L., & Li, J.Q. Strontium ordering, structural modulation in layered hexagonal Sr {sub x}CoO{sub 2} and physical properties of Sr{sub 0.35}CoO{sub 2}. United States. doi:10.1016/j.materresbull.2006.05.007.
Yang, H.X., Shi, Y.G., Guo, Y.Q., Liu, X., Xiao, R.J., Luo, J.L., and Li, J.Q. Thu . "Strontium ordering, structural modulation in layered hexagonal Sr {sub x}CoO{sub 2} and physical properties of Sr{sub 0.35}CoO{sub 2}". United States. doi:10.1016/j.materresbull.2006.05.007.
@article{osti_20900949,
title = {Strontium ordering, structural modulation in layered hexagonal Sr {sub x}CoO{sub 2} and physical properties of Sr{sub 0.35}CoO{sub 2}},
author = {Yang, H.X. and Shi, Y.G. and Guo, Y.Q. and Liu, X. and Xiao, R.J. and Luo, J.L. and Li, J.Q.},
abstractNote = {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.},
doi = {10.1016/j.materresbull.2006.05.007},
journal = {Materials Research Bulletin},
number = 1,
volume = 42,
place = {United States},
year = {Thu Jan 18 00:00:00 EST 2007},
month = {Thu Jan 18 00:00:00 EST 2007}
}