Published March 1, 2009 | Version v1
Journal article Metadata-only

Effects of water intercalation in NaxCoO2·yH2O

Creators

  • 1. Institute of Physics, National Chiao Tung University, Hsinchu 30010, Taiwan (China)
  • 2. Department of Physics, National Changhua University of Education, Changhua 50007, Taiwan (China)
  • 3. National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan (China)

Description

Water intercalation is necessary for the occurrence of superconductivity in NaxCoO2·yH2O. It is known that water insertion leads to the elongation of the c-axis. Beyond that, it remains controversial about the effects of water intercalation on the electronic structure of NaxCoO2·yH2O. In this paper, we report the Co-K edge spectroscopy on y=0.7 and 1.4 samples, respectively. The spectra are compared with those of the reference samples. It is found that the variation of the Co valence can not be explained by the simple electron counting. These results are consistent with those of the previous chemical titration.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/150/5/052138

Additional details

Identifiers

DOI
10.1088/1742-6596/150/5/052138;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
150
Journal Issue
5
Journal Page Range
[4 p.]
ISSN
1742-6596

Conference

Title
25. international conference on low temperature physics
Acronym
LT25
Dates
6-13 Aug 2008
Place
Amsterdam (Netherlands)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41110519
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
COBALT OXIDES; ELECTRONIC STRUCTURE; ELECTRONS; ELONGATION; EMISSION SPECTRA; EMISSION SPECTROSCOPY; HYDRATES; SODIUM COMPOUNDS; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TITRATION; VALENCE; VARIATIONS; WATER
Descriptors DEC
ALKALI METAL COMPOUNDS; CHALCOGENIDES; CHEMICAL ANALYSIS; COBALT COMPOUNDS; DEFORMATION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTARY PARTICLES; FERMIONS; HYDROGEN COMPOUNDS; LEPTONS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; QUANTITATIVE CHEMICAL ANALYSIS; SPECTRA; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS; VOLUMETRIC ANALYSIS