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Structural suitability of GdFeO3 as a magnetic buffer layer for GdBa2Cu3O7-x superconducting thin films

H. S. Park ; J. Y. Oh ; B. H. Song ; B. Kang

한국초전도.저온논문지, 2021, 23(2), , pp.14-18

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Título:
Structural suitability of GdFeO3 as a magnetic buffer layer for GdBa2Cu3O7-x superconducting thin films
Autor: H. S. Park ; J. Y. Oh ; B. H. Song ; B. Kang
Assuntos: 전기공학
É parte de: 한국초전도.저온논문지, 2021, 23(2), , pp.14-18
Descrição: We investigated the structural suitability of GdFeO3 (GdFO) as a buffer layer for the GdBa2Cu3O7-x (GdBCO) superconducting films. GdFO films with different thicknesses and GdBCO thin films were all prepared by using a pulsed laser deposition technique. The analyses of X-ray diffraction and EXAFS data indicates that the c-axis parameter increases and the Fe-O bond length decreases with the GdFO thickness due to the compressive stain induced by the lattice mismatch between GdFO and STO substrate and as a result, the Debye-Waller factor, an index of disorder in the local structure near the Fe-O bond, increases with the GdFO thickness. However, for the GdBCO/GdFO bilayer structure, the Debye-Waller factor decreases as the GdFO thickness increases indicating a diminished disorder by the structural coupling between GdFO and GdBCO. These results indicate that an appropriate thickness of GdFO is required to be utilized as a magnetic buffer layer for the GdBCO superconducting films. KCI Citation Count: 0
Editor: 한국초전도저온학회
Idioma: Coreano

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