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High Magnetic Field Calibration Device

IP.com Disclosure Number: IPCOM000063333D
Original Publication Date: 1985-Mar-01
Included in the Prior Art Database: 2005-Feb-18

Publishing Venue

IBM

Related People

Authors:
Umbach, CP [+details]

Abstract

This article relates generally to magnetic field calibration devices and more particularly to a device which provides for the calibration of high magnetic fields. Fig. 1 shows a schematic diagram of a high magnetic field calibration device 1 which includes a metallic ring 2 having a diameter less than 5000˜ with a pair of current leads 3 attached to ring 2. A pair of voltage leads 4 attached to leads 3 completes device 1. At a temperature T < 4.2ŒK, the resistance of device 1 in a magnetic field (B) N perpendicular to the plane of the ring shows a characteristic decrease in magnitude at the field in which the cyclotron radius of an electron becomes equal to the radius of ring 2. Fig. 2 shows a plot of the ring resistance (R) vs. magnetic field (B).