Ferrimagnetic rare-earth orthoferrites: A new, magnetic substrate for the growth of epitaxial Y-Ba-Cu-O thin films
Ramesh, Ramamoorthy, A. Inam, W.A. Bonner, P. England, B.J. Wilkens, B.J. Meagher, L. Nazar, X.D. Wu, M.S. Hegde, C.C. Chang, T. Venkatesan, H. Padamsee
We report, for the first time, growth of thin films of Y-Ba-Cu-O by pulsed laser deposition onto  YbFeO3 single-crystal substrates. A Tc,0 of 88 K was obtained along with a critical current greater than 105 A/cm2 at 77 K. X-ray diffraction shows epitaxial growth of the 1-2-3 phase with the c axis oriented normal to the substrate plane. Rocking curve measurements show a 0.5°full width at half maximum, indicating good alignment of the layered structure. The composition was verified by Rutherford backscattering, while channeling results reveal a 17% yield, consistent with the rocking curve measurements. Growth of thin films of 1-2-3 on a magnetic substrate may open the way for potentially new applications.
Applied Physics Letters
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