MAGNETORESISTANCE ELEMENT OF SUPERCONDUCTING LAMINATED FILM

PURPOSE:To make a magnetic sensor highly sensitive by a method wherein ceramic superconductor films and insulating films are laminated alternately, the laminated ceramic superconductor films are connected in series electrically and electrodes are formed on both ends. CONSTITUTION:Ceramic superconduc...

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Bibliographic Details
Main Authors TSUCHIMOTO SHUHEI, NOJIMA HIDEO, ONO EIZO, OSADA MASAYA
Format Patent
LanguageEnglish
Published 26.04.1990
Subjects
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:PURPOSE:To make a magnetic sensor highly sensitive by a method wherein ceramic superconductor films and insulating films are laminated alternately, the laminated ceramic superconductor films are connected in series electrically and electrodes are formed on both ends. CONSTITUTION:Ceramic superconductor films 6 and electrically insulating films 7 are piled up alternately; the individual superconductor layers 6 are constituted so as to be folded back and are connected in series electrically. Accordingly, a large output voltage is obtained by adding voltages generated in the individual ceramic superconductor layers when a series grain boundary is increased or a magnetic field is applied; it is possible to detect a weak magnetic field at a high sensitivity. In addition, when an oxide high-temperature superconductor is used as the ceramic superconductor films 6, it is possible to form a good- quality multilayer film structure which is not stripped off because a mismatching of a lattice constant between the superconductor films 6 and the insulating films 7 is extremely small. Thereby, a magnetic sensor can be made highly sensitive and small-sized.
Bibliography:Application Number: JP19880268586