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Crystal structure and anisotropy of iodine-intercalated Bi[sub 2]Sr[sub 2]Ca[sub n[minus]1]Cu[sub n]O[sub x]

Conference · · Journal of Superconductivity; (United States)
OSTI ID:7167030
;  [1];  [2]; ;  [3]; ; ;  [4]
  1. Univ. of Tokyo (Japan)
  2. Industrial Research Limited, Lower Hutt (New Zealand)
  3. Victoria Univ. of Wellington (New Zealand)
  4. Kyoto Univ. (Japan)
+ Show Author Affiliations
The electronic state and structural configuration of the intercalated iodine species in stage-1. I Bi[sub 2]Sr[sub 2]Ca[sub n[minus]1]Cu[sub n]O[sub x] (n = 1, 2), have been studied through polarization-resolved Raman and Moessbauer spectroscopy. The polarization dependence of the Raman spectra and the Moessbauer measurement confirmed the dominant species to be triiodide ions, I[sup [minus][sub 3]], with alignment of these linear molecules either along the a- or b-axis in the host crystals. Transport measurements such as thermoelectric power and Hall coefficient clearly indicated that hole carriers are doped into the CuO[sub 2] planes upon intercalation, by which Tc of the host superconductor is changed. Furthermore, based on resistivity measurements in a magnetic field, we suggest that the iodine intercalation leads to a decrease of the anisotropy both in normal and superconducting states, suppressing the extremely two-dimensional character of the Bi[sub 2]Sr[sub 2]Ca[sub n[minus]1]Cu[sub n]O[sub x] systems. 22 refs., 5 figs.
OSTI ID:
7167030
Report Number(s):
CONF-930710--
Conference Information:
Journal Name: Journal of Superconductivity; (United States) Journal Volume: 7:1
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CERAMICS
CHALCOGENIDES
CHARGED PARTICLES
CLATHRATES
COPPER COMPOUNDS
CRYSTAL STRUCTURE
CUPRATES
DOPED MATERIALS
ELECTRICAL PROPERTIES
GAMMA SPECTROMETERS
HIGH-TC SUPERCONDUCTORS
IODINE IONS
IONS
LASER SPECTROSCOPY
MAGNETIC FIELDS
MATERIALS
MEASURING INSTRUMENTS
MOESSBAUER SPECTROMETERS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RAMAN SPECTROSCOPY
SPECTROMETERS
SPECTROSCOPY
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
THERMOELECTRIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE