NDLI: Reduction of low frequency excess noise and temperature drift of SQUIDs by degaussing using high frequency magnetic fields

Content Provider	IEEE Xplore Digital Library
Author	Muck, M. Schone, S. Heiden, C.
Copyright Year	2002
Abstract	We have investigated a possible scheme to reduce 1/f noise generated by thermally activated hopping of vortices in SQUIDs by trying to remove vortices from the SQUID body, or at least move them to pinning sites having a high pinning energy. This is accomplished by a "demagnetisation" scheme using a high frequency magnetic field. Niobium SQUIDs were carefully cooled in a magnetically well shielded environment and then exposed to switching transients. The thereby generated low frequency excess noise or an increased white noise could substantially be reduced by this demagnetisation process. The temperature dependence of the flux signal of the flux locked SQUID and the magnetic field dependence of this drift could also be reduced in cases where the drift was caused by motion of trapped vortices. The influence of frequency and amplitude of the demagnetisation field on the amount of noise reduction was studied in some detail.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3263
Ending Page	3266
Page Count	4
File Size	437471
File Format	PDF
ISSN	10518223
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Noise reduction Low-frequency noise Temperature SQUIDs Magnetic shielding Magnetic noise Noise generators Demagnetization Niobium
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Excess low-frequency flux noise in dc SQUIDs

Investigation of Low-Frequency Excess Flux Noise in DC SQUIDs at mK Temperatures

Low-frequency noise reduction in Y-Ba-Cu-O SQUIDs by artificial defects

Low excess flux noise in YBa/sub 2/Cu/sub 3/O/sub 7-x/ dc SQUIDs cooled in static magnetic fields

Noise Performance of Niobium Nano-SQUIDs in Applied Magnetic Fields

Excess noise in dc SQUIDs from 4.2K to 0.022K

Study of Low-Frequency Noise Performance of Nanobridge-Based SQUIDs in External Magnetic Fields

Adaptive frequency dependent gradiometry applied to SQUID magnetocardiography

Demagnetization of Layered Ferromagnetic Structures for Magnetically Shielding: Frequency Considerations

Reduction of low frequency excess noise and temperature drift of SQUIDs by degaussing using high frequency magnetic fields

Similar Documents

Excess low-frequency flux noise in dc SQUIDs

Investigation of Low-Frequency Excess Flux Noise in DC SQUIDs at mK Temperatures

Low-frequency noise reduction in Y-Ba-Cu-O SQUIDs by artificial defects

Low excess flux noise in YBa/sub 2/Cu/sub 3/O/sub 7-x/ dc SQUIDs cooled in static magnetic fields

Noise Performance of Niobium Nano-SQUIDs in Applied Magnetic Fields

Excess noise in dc SQUIDs from 4.2K to 0.022K

Study of Low-Frequency Noise Performance of Nanobridge-Based SQUIDs in External Magnetic Fields

Adaptive frequency dependent gradiometry applied to SQUID magnetocardiography

Demagnetization of Layered Ferromagnetic Structures for Magnetically Shielding: Frequency Considerations

Reduction of low frequency excess noise and temperature drift of SQUIDs by degaussing using high frequency magnetic fields