Thermal expansion of a YBa2Cu3O7 superconducting ceramic |
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| Institution: | 1. Development Center of Advanced Technologies (CDTA), UROP, El Bez Sétif 19000, Algeria;2. Laboratory of Thin Films and Interfaces, Constantine University, Constantine 25000, Algeria;3. Lorraine University, Jean Lamour Institute, UMR 7198, Vandoeuvre 54506, France;4. Laboratory of Materials: Elaborations-Properties-Applications, Jijel University, Jijel 18000, Algeria |
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| Abstract: | The thermal expansion of the High Tc superconducting ceramic YBa2Cu3O7-δ has been measured from 50 K up to room temperature by means of a capacitance dilatometer. No detectable anomalous change in lenght is observed at the critical temperature Tc, within the resolution of our experimental set up: Δl/l = 5 10?8. This indicates a weak dependence of Tc on pressure, contrarily to the one measured on (LaBa)CuO lower Tc superconducting ceramics. The Debye temperature is also estimated. |
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