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Growth of thin oxide films

The important part of experimental material research is the preparation of materials. Since early 1990 we study the growth of thin oxide films using pulsed laser deposition (PLD) method, which is available in our laboratory. The growth of cuprates, manganites, ruthenates, and other types of oxides has been investigated.
The excellent quality epitaxial films of two different types of high-temperature superconductors have been obtained, YBa₂Cu₃O₇ (YBCO) and La_2-xSr_xCuO₄ (LSCO). The films are grown on various substrates, most of them supplied by the Group of oxide crystal growth at IFPAN (ON3.1).

In 1994 we have introduced a new type of substrate, SrLaAlO₄, for the growth of LSCO [1], markedly improving the properties of the films. Since than, this type of substrate has became a standard in the growth of the LSCO, and it is nowadays used by most laboratories around the world. The LSCO films doped with Ni impurity, and the LSCO films with various Sr contents are prepared, and used for studies of various physical properties. YBCO films grown by PLD have been used to study strong vortex pinning in high temperature superconductors [2]. Recently, the YBCO films with high critical current density have been obtained, grown on the CeO₂-buffered, R-plane sapphire [3]. Such films are suitable for microwave applications in the wireless industry, and may be utilized also in the design of fault current limiters, used for the protection of power grids.
[1] Thickness Dependence of La_2-xSr_xCuO₄ Films, M. Z. Cieplak, M. Berkowski, S. Guha, E. Cheng, A. S. Vagelos, D. J. Rabinowitz, B. Wu, I. E. Trofimov, and P. Lindenfeld, Appl. Phys. Lett. 65, 3383 (1994).
[2] Strong pinning in high-temperature superconducting films, C. J. van der Beek, M. Konczykowski, A. Abal’oshev, I. Abal’osheva, P. Gierlowski, S. J. Lewandowski, M. V. Indenbom, and S. Barbanera, Phys. Rev. B 66, 024523 (2002).
[3] Growth and characterization of YBa₂Cu₃O_7−δ films on CeO₂ - buffered sapphire, I. Abal’osheva, I. Zaytseva, M. Aleszkiewicz, A. Malinowski, V. Bezusyy, Y. Syryanyy, P. Gierłowski, O. Abal’oshev, M. Konczykowski, and M. Z. Cieplak, Acta Phys. Pol. A 126, 69 (2014).