Abstract
Using a low-temperature stage X-ray diffractometer, we have investigated the temperature dependence of the lattice parameters of single crystal superconductors Bi2Sr1.8CaCu2Ox. The experimental results show that (i) the lattice constants increase linearly with increasing temperature above about 100 K; (ii) thec-axis lattice parameter shows a kink in the superconducting transition region, while thea, b-axis parameters do not show any anomalous behavior in this region; (iii) botha, b, andc show negative thermal expansion coefficients below 40–50 K, which may be related to the characteristics of the Cu-O bond.
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Yang, Z.J., Yewondwossen, M., Lawther, D.W. et al. Thermal expansion of Bi2.2Sr1.8CaCu2O x superconductor single crystals. J Supercond 8, 233–239 (1995). https://doi.org/10.1007/BF00732376
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DOI: https://doi.org/10.1007/BF00732376