Microwave devices using YBa sub 2 Cu sub 3 O. sub 7 minus delta. films made by pulsed laser deposition

Conference · Thu Feb 28 23:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6089104

Newman, H S; Chrisey, D B; Horwitz, J S; Weaver, B D; Reeves, M E ^[1]

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1. Naval Research Lab., Washington, DC (United States)

High-quality oriented thin films of YBa{sub 2}Cu{sub 3}O{sub 7} {delta} having transition temperatures {gt}88 K and critical current densities (at 77 K, zero magnetic field) {gt}10{sup 6} A/cm{sup 2} have been made by pulsed laser deposition on {l angle}100{r angle} MgO and LaAlO{sub 3} substrates. The microwave surface resistance (R{sub s}) has been measured between 20 K and 120 K at 36 GHz by a copper cavity end-wall-replacement technique. R{sub s} measurements show consistently sharp transitions having high critical temperature onsets with low residual surface resistances ({lt}10 m{omega} at 36 GHz and 77 K). Microwave devices fabricated from films on MgO have included an X-Band modified 5-pole Chebyshev filter having an insertion loss of {approximately}8 dB at 77 K. Irradiation of unpatterned films on LaAlO{sub 3} with 2 MeV H{sup +} ions at a fluence increment of 10{sup 16} /cm{sup 2} resulted in only a small shift ({approximately}2 K) in the 36 GHz microwave transition temperature.

• OSTI ID: 6089104
• Report Number(s): CONF-900944--
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 27:2; ISSN IEMGA; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CURRENTS
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
FILMS
FLUXMETERS
FUNCTION GENERATORS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LASER-PRODUCED PLASMA
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLASMA
PULSE GENERATORS
RARE EARTH COMPOUNDS
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING FILMS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES