The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1976
Filed:
Aug. 16, 1973
Guy Chiron, St. Martin D'Heres, FR;
Louis Debreuil-Monet, Valence, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
This invention relates to methods of measuring magnetic fields and a magnetometer for performing the method. According to the method an alternating magnetic field is applied to a thin magnetic film along its axis of difficult magnetization. The alternating magnetic field applied to the film has an amplitude which is less than the anisotropy field of the film, the direction of magnetization of the film then undergoing an oscillation without reversal. An electrical signal representing variations per unit of time of the magnetic induction in the film is withdrawn and analyzed and to effect the analysis the component of the magnetic field is measured at any of the odd harmonic frequencies of the electrical signal. The electrical signal is obtained by collecting the voltage at the terminals of a conducted loop surrounding the film and having its axis directed along the easy axis of the film.