Abstract
We have synthesized new layered Bi-cuprate thin films of Bi 2(La,Ca) 2Ca n−1 Cu n O z ( n=3, 4, 5, 6 and 7) by the laser ablation method. These materials are metastable phases that have not been synthesized by standard solid state reaction method. The lattice parameter c was 36.6, 43.1, 49.4, 56.0 and 62.5 Å for the n=3 (2223), n=4 (2234), n=5 (2245), n=6 (2256) and n=7 (2267) phases, respectively. All the films showed semiconductor-like temperature dependence with no trace of superconductivity down to 4.2 K.
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