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Microstructures in Y-Ba-Cu-O Thin Films Investigated by XAFS Techniques

  • A. Krol (a1), Z. H. Ming (a1), C. S. Lin (a1), Y. L. Soo (a1), C. X. Gu (a1), Y. H. Kao (a1), E. Narumi (a1), D. T. Shaw (a2) and G. C. Smith (a3)...

Abstract

Superconducting films of YBa 2Cu3O7−6 obtained by laser ablation on MgO and ZrO2 substrates were investigated by soft x-ray absorption fine structure technique (XAFS) at O K-edge. Local environment around oxygen atoms was probed and information on the distribution of the nearestneighbors was obtained. Much higher degree of local disorder than that in a bulk YBa2Cu3O7−δ sample was observed.

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1. Witanachchi, S., Kwok, H. S., Wang, X. W., and Shaw, D. T., Appl. Phys. Lett. 53, 234 (1988).
2. Krol, A., Lin, C. S., Ming, Z. H., Sher, C. J., Kao, Y. H., Chen, C. T., Sette, F., Ma, Y., Smith, G. C., Zhu, Y. Z., and Shaw, D. T., Phys. Rev 42, 2635 (1990).
3. Smith, G. C., Krol, A., and Kao, Y. H., Nucl. Instr. Meth. A 291, 135 (1990).

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