FIELD: building two-dimensional periodic microstructures around high-temperature superconductor films.
SUBSTANCE: proposed method intended for producing loose couplings in the form of two-dimensional periodic microstructures possessing Josephson properties used in high-sensitivity systems of HTSC film SQUID-magnetometers, for instance to produce high-sensitivity magnetic-flux sensors and electric-field detectors for magnetocardiogram recording units in medicine, geophysics, environment control, in oil industry to check oil products for paramagnetic impurities, and the like involves building of periodic microstructures around HTSC films possessing Josephson properties. To this end high-temperature superconductor is applied to substrate and loose-coup[ling regions are formed thereon in the course of HTSC film evaporation at the same time organizing rarefaction and compression regions within substrate to produce impact on film growth process. Periodic rarefaction and compression regions can be organized in substrate by laser-beam ultrasonic pulse, for instance that of nanosecond length, that excites acoustic standing wave of about 45 - 90 μm in length; in the process opposite side of substrate is acted upon by ultrasonic pulse. Provision is made to prevent parasitic loose couplings with critical currents lower than that of bridges in compression region of superconducting components and for dispensing with large units whose substructure has disoriented crystals forming Josephson structures of Dyem bridge type at crystal-to-crystal interface or on embedded microscopic particles of non-superconducting phase YBaCuO.
EFFECT: facilitated manufacture, enhanced operating stability of mentioned components, enhanced reliability and reproducibility of their characteristics.
6 cl, 7 dwg
Title | Year | Author | Number |
---|---|---|---|
TECHNIQUE OF CREATION OF WEAK COUPLINGS ON FILM HIGH- TEMPERATURE SUPERCONDUCTOR SQUIDS | 2001 |
|
RU2199796C2 |
SQUID-MAGNETOMETER BUILT AROUND HIGH- TEMPERATURE FILMS | 2000 |
|
RU2184407C1 |
METHOD OF MAKING MULTILAYER SUPERCONDUCTING yBaCuO NANOFILMS ON SUBSTRATE | 2008 |
|
RU2382440C1 |
SUPERCONDUCTING QUANTUM INTERFERENCE TRANSMITTER AND PROCESS OF ITS MANUFACTURE | 1997 |
|
RU2133525C1 |
METHOD OF SQUID FORMATION WITH SUBMICRON JOSEPHSON JUNCTIONS MOUNTED IN HIGH-TEMPERATURE SUPERCONDUCTOR FILM | 2006 |
|
RU2325005C1 |
METHOD OF MAKING SUPERCONDUCTING THIN FILM WITH REGIONS WITH DIFFERENT VALUES OF CRITICAL CURRENT DENSITY | 2008 |
|
RU2375789C1 |
PROCESS OF MANUFACTURE OF HIGH-TEMPERATURE SUPERCONDUCTING JOSEPHSON JUNCTION | 1997 |
|
RU2107358C1 |
METHOD FOR MANUFACTURING OF HIGH-TEMPERATURE SUPERCONDUCTING JOSEPHSON JUNCTION | 1996 |
|
RU2105390C1 |
SHF-AMPLIFIER BASED ON HIGH-TEMPERATURE SQUID WITH FOUR JOSEPHSON CONTACTS | 2013 |
|
RU2544275C2 |
METHOD OF FORMING SUPERCONDUCTING THIN FILM WITH LOCAL REGIONS OF VARIABLE THICKNESS | 2015 |
|
RU2580213C1 |
Authors
Dates
2006-04-27—Published
2004-11-24—Filed