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:
Nov. 24, 1992
Filed:
Nov. 29, 1991
Hitachi, Ltd., Tokyo, JP;
Abstract
A measured electron beam having a polarization vector as represented by arrow is irradiated to a ferromagnetic target made of an iron single crystal through a polarization vector rotator comprising a magnetic field generation coil and an electrostatic lens. A magnetic field generator is coupled with the target and aligns the direction of magnetization of the target in a direction represented by arrow. An oscillator for providing a rotation signal of the polarization vector of the measured electron beam is connected to the polarization vector rotator. The current absorbed by the target is detected and amplified by a current amplifier. A lock-in amplifier detects the phase and the magnitude of an A.C. component using the signal from the oscillator as a reference signal. The magnitude of the D.C. component of the absorbed current is detected by a D.C. current detector.