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Ferrimagnetic rare-earth orthoferrites: A new, magnetic substrate for the growth of epitaxial Y-Ba-Cu-O thin films (1989)

Ramesh, R. ; Inam, A. ; Bonner, W. A. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 55 (1989), S. 1138-1140

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: We report, for the first time, growth of thin films of Y-Ba-Cu-O by pulsed laser deposition onto [001] 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.102460

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Superconducting structures for electron accelerators (1988)

Padamsee, H.

Springer

Journal of superconductivity 1 (1988), S. 377-393

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ISSN: 1572-9605

Keywords: microwave ; superconductors ; accelerators ; highT c

Source: Springer Online Journal Archives 1860-2000

Topics: Electrical Engineering, Measurement and Control Technology , Physics

Notes: Abstract Large-scale application of superconducting RF cavities to electron accelerators is in progress at many laboratories around the world. These accelerators will provide high-energy beams for elementary particle physics research, medium-energy beams for nuclear physics research, and low-energy beams for free-electron lasers. Niobium is the superconductor of choice, and its performance is subject to further advances, opening new applications for the next generation of accelerators. Extensive RF characterization of high-T c superconductors (HTSC) is already under way. From the results so far, it is clear that substantial improvements in the RF properties will be needed before HTSC can compete with Nb or even with copper at room temperature. New measurements on crystalline YBaCuO suggest that these difficulties are not intrinsic, providing a strong incentive for continued efforts to improve material preparation.