Pulsed laser deposition of novel HTS multilayers for passive and active device applications

• Published in: IEEE transactions on applied superconductivity 1993-03, Vol.3 (1), p.1528-1531
• Main Authors: Chrisey, D.B., Horwitz, J.S., Pond, J.M., Carrol, K.R., Lubitz, P., Grabowski, K.S., Leuchtner, R.E., Carosella, C.A., Vittoria, C.V.
• Format: Article
• Language: English
• Subjects: Applied sciences; Electronics; Exact sciences and technology; Ferrites; Ferroelectric materials; Frequency; High temperature superconductors; Nonhomogeneous media; Optical pulses; Pulsed laser deposition; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Strontium; Superconducting devices; Superconducting transmission lines; Yttrium barium copper oxide
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/77.233376

Multilayered structures have been fabricated from binary combinations of the high-T/sub c/ superconductor YBa/sub 2/Cu/sub 3/O/sub 7- delta / (YBCO) and the ferrite BaFe/sub 12/O/sub 19/ (BFO) or the ferroelectric Sr/sub 0.5/Ba/sub 0.5/TiO/sub 3/ (SBT). The combination of YBCO and BFO was found to destroy the superconductivity of the YBCO layer. Vibrating sample magnetometer measurements of the BFO layer still indicated a large uniaxial anisotropy. The underlying YBCO layer of an SBT/YBCO bilayer still had high quality transport properties unaffected by the SBT layer (T/sub c/ approximately 91 K. J/sub c/(77 K) approximately 2*10/sup 6/ A/cm/sup 2/). A thin-film, normal metal/SBT transmission line, patterned in microstrip, demonstrated a wealth of temperature and electric field dependent dielectric information for the frequency range tested (f