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High critical temperature superconductors

Grant number: 91/00573-0
Support Opportunities:Research Projects - Thematic Grants
Duration: January 01, 1992 - May 31, 1996
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Sergio Moehlecke
Grantee:Sergio Moehlecke
Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


We are proposing a project which aims to carry out a systematic study of the effects of doping and pressure on the properties of superconductors of critical high temperature in the form of polycrystalline, monocrystalline and thin film. With this study we aim to obtain concrete and significant results which will make it possible to generate correlations between sizes of microscopic and macroscopic character, both in the normal state and in the superconductor, which will lead us to an understanding of the mechanisms of superconductivity and of the parameters of the mixed state. To carry out a systematic investigation of this type means being able to make future predictions of what parameters and conditions must be satisfied, or even what compound should be synthesized to optimize the conductivity, or again which defects to introduce for an eventual technological application. To achieve these objectives we will use a variety of techniques and methods of characterization of the superconductor and normal state, namely: resistivity, AC and DC susceptibility, critical current, pressure, mechanical tension, RPE, RMN and optical spectroscopy. (AU)

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