Abstract
The variation of structure and transport property for the nominal composition of Y0.8Ca0.2Ba1.8Nd0.2Cu3O y (YCBNC) at temperature range of 78 K < T < 284 K were studied. YCBNC shows a superconducting transition temperature (zero resistivity) of T c0 ∼ 83 K. There is no phase transition detected in the accuracy of our experiments in the whole temperature range. The dependences of lattice constants upon temperature can be discussed in two temperature regions. The other atomic parameters, or the deduced structural parameters, such as the orthorhombic strain, the lattice strain, some selected bond lengths and bond angles all depend on temperature. The dependences of the atomic structural parameters on temperature indicate that these atomic structural parameters may relate to the superconductivity to some extent.
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