Measuring instrument, electrical resistance elements and measuring system for measuring time-variable magnetic fields or field gradients

Patent metadata

Field	Value
Publication number	US-2016351306-A1
Application number	US-201615209977-A
Country	US
Kind code	A1
Filing date	Jul 14, 2016
Priority date	Jun 20, 2009
Publication date	Dec 1, 2016
Grant date	—

Abstract

A measuring instrument for time-variable magnetix fluxes, or flux gradients, to electrical resistance elements, and a measuring system comprising a measuring instrument or electrical resistance element. The core component of the measuring instrument is a flux transformer composed of a base material which has a phase transition to the superconducting state. Even when the base material is in the superconducting state, this flux transformer comprises at least one load region having electrical resistance that is other than zero for dissipating the electric energy in the conductor loop thereof. For this purpose, the conductor loop and the magnetic field source are disposed in one plane and are typically photolithographically structured. The resistance elements, having resistance values of ≦10 −4 Ω, are used as core components in the measuring instrument. No measurement is possible in a broader frequency range, with less noise and with greater sensitivity than was possible with generic measuring instruments or measuring systems.

First claim

1 - 43 . (canceled)

44 . An electrical resistance element having a resistance value that is other than zero and is 10 −4 or less, comprising a coplanar structure composed of mutually spaced electrodes, which are electrically connected by a resistance layer made of a normally conducting material, the material of the electrodes having a phase transition to the superconducting state.

45 . The electrical resistance element according to claim 44 , wherein the electrodes are meander-shaped.

46 . The electrical resistance element according to claim 44 , wherein the structure has an interdigitizing design.

47 .- 50 . (canceled)

Assignees

• Forschungszentrum Juelich Gmbh

Inventors

• Faley Mikhail
• Poppe Ulrich
• Fagaly Robert L

Classifications

• H01C1/14 Primary

  Terminals or tapping points specially adapted for resistors; Arrangements of terminals or tapping points on resistors · CPC title

• G01R33/0354

  SQUIDS · CPC title

• G01R33/035 Primary

  using superconductive devices · CPC title

• H01C7/00

  Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material (consisting of loose powdered or granular material H01C8/00; resistors having potential barriers, e.g. field-effect resistors, H10D1/40 - H10D1/43, H10K10/10; semiconductor devices sensitive to electromagnetic or corpuscular radiation, e.g. photoresistors, H10F30/00; magnetic field controlled resistors H10N50/10; bulk negative resistance effect devices H10N80/00) · CPC title

• H10N60/80

  Constructional details · CPC title