Electricity: measuring and testing – Determining nonelectric properties by measuring electric... – Superconductors
Patent
1989-10-03
1991-11-12
Wieder, Kenneth A.
Electricity: measuring and testing
Determining nonelectric properties by measuring electric...
Superconductors
505843, G01N 2700
Patent
active
050650874
ABSTRACT:
An apparatus for observing a superconductive phenomenon is disclosed. In the apparatus, a cooling unit cools a superconductor having a threshold temperature at which the superconductor changes from the normal conductive phase to the superconductive phase, and a magnetic field is applied thereto. A current is supplied to the superconductor, and there are clearly observed a phenomenon on which an electric resistance thereof becomes zero at a threshold temperature thereof, a phenomenon on which the superconductor changes from the normal conductive phase to the superconductive phase at a threshold current to be supplied thereto, and a phenomenon on which the superconductor changes from the normal conductive phase to the superconductive phase at a threshold magnetic field to be applied thereto.
REFERENCES:
patent: 4010419 (1977-03-01), Reeves et al.
patent: 4851762 (1989-07-01), Kim et al.
"Novel Magnetic Sensor Using Y-BA-Cu-O Ceramic Superconductor: Super Magneto-Resistor" by S. Tsuchimoto et al., 1987 IEEE, pp. 867-868.
Highly Sensitive Magnetic Sensor Using Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x Films, 5th Int'l. Workshop on Future Electron Devices-High Temperature Superconducting Electron Devices-(FED HiTcSc-ED Workshop), Jun. 2-4, 1988 Miyagi-Zao, pp. 231-234.
"Galvanomagnetic Effect of an Y-Ba-Cu-O Ceramic Superconductor and Its Application to Magnetic Sensors", by Hideo Nojima et al., Japanese Journal of Applied Physics, vol. 27, No. 5, May 1988, pp. 74-78.
Kataoka Shoei
Kita Ryusuke
Nagata Masaya
Ohno Eizo
Shintaku Hidetaka
Regan Maura K.
Sharp Kabushiki Kaisha
Wieder Kenneth A.
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