New SuperconductorsNo Access
STRUCTURAL CHANGES OF Ni-DOPED YBCO AT DIFFERENT TEMPERATURE
https://doi.org/10.1142/S0217979205028499Cited by:0 (Source: Crossref)
Abstract
In YBa2Cu3-xNixOy at about 480°C all the samples show a tetragonal phase. Comparing the structural changes at 480°C with those at room temperature, the bond lengths such as Cu(1)-O(4) and Cu(2)-O(4) vary regularly with Ni-content increasing at room temperature, but not at high temperature. It suggests that there is a close correlation between structural changes and superconductivity in this system. The difference of orthorhombic- tetragonal phase -transition is also discussed between undoped YBCO and Ni-doped YBCO at high temperature.
PACS: 74.62.Bf, 74.72.Bk, 61.10.Nz, 61.66.Fn
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