Study of the behavior of the rho-T curve of YBa2Cu3Oy during synthesis in ambient air
- Feng, QR
- Wang, XJ
- Cao, K
DOIAbstract
The relation of the resistivity vs. synthesizing temperature of YBa2CU3Oy samples was studied while the material being was prepared under atmospheric conditions. A set of rho-T curves was obtained for the entire process. At the end of the last sintering step the resistivity values of the YBa2CU3Oy, sample was rho(1233) = 5.64 x 10(-2) Omegacm at 960 degreesC, and rho(300) = 4.32 x 10(-3) Omegacm at room temperature. The rho-T curves for the heating stages also show that the formation temperature of YBa2Cu3Oy crystal grains and the re-crystallization temperature are in the range of 480-870 degreesC. When a YBa2Cu3Oy sample was reheated, the rho-T curve also shown that the orthorhombic-tetragonal phase transformation of YBa2Cu3Oy sample occur...
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