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MATERIALS SCIENCE LABORATORY
The superconductivity in the CuBa2Ca3Cu4Ox
(Cu-1234)- based superconductors is best choice
with the low anisotropy and high coherence
length, which results into its capabilities
of carrying high current densities. These
properties make this compound a potential
candidate from application point of view in
the cuperate family. The normal pressure synthesis
of this compound has not yet become possible,
however, using the properties of thallium
as a reaction rate accelerator and a structure
stabilizer we have prepared the CuBa2Can-1CunO4+2n-d
(Cu-1212, Cu-1223 and Cu-1234, for n=2,3,4)
homologous phases in the form of thin films
of Cu1-xTlxBa2Can-1CunO4+2n-d - based superconductors
(Cu1-xTlx-1212, Cu1-xTlx-1223 and Cu1-xTlx-1234,
for n=2,3,4). Research activities are focused
on the preparation and characterization of
these low an-isotropic superconductors in
the form of thin films and bulk materials.
Presently we are involved in the doping of
CuO2 planes of these compounds via charge
reservoir layer. These low an-isotropic superconductor
materials are being characterized by
1. Resistivity Measurements.
2. AC-Magnetic Susceptibility Measurements
3. Fourier Transform Infrared Absorption
Measurements
4. X-Ray Photo Emission Spectroscopy.
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