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|Title:||Study of Pr<sub>x</sub>Y<sub>1-x</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7-</sub><sub><img src='/image/spc_char/delta1.gif' border=0></sub> high <i>T</i><sub>c</sub> superconductors|
|Authors:||Dole, B N|
Shah, S S
|Abstract:||The substitution of Pr in high <i>T</i><sub>c</sub> superconducting compound plays very interesting role such as annihilation of superconductivity with increase of Pr concentration, which is not adequately explained yet. The samples of the system Y<sub>1-<i>x</i></sub>Pr<i><sub>x</sub></i>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7-</sub><sub><img src='/image/spc_char/delta1.gif' border=0></sub> with compositions (<i>x</i> = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5) were prepared by well known conventional ceramic route and chemical route. The results of resistivity, X-ray diffraction, orthorhombicity, X-ray density, bulk density, volume cell and oxygen content of both the routes are reported. The samples prepared by chemical route give better results than conventional ceramic route. Bond distances obtained from neutron diffraction show that the electron phonon interaction becomes weaker and results in loss of superconductivity.|
|ISSN:||0975-1041 (Online); 0019-5596 (Print)|
|Appears in Collections:||IJPAP Vol.43(04) [April 2005]|
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