NDLI: Broadband DC SQUID NMR Spectrometry on Bulk Metals

Content Provider	Springer Nature Link
Author	Digby, M. Li, Junyun Lusher, C.P. Cowan, B.P. Saunders, J.
Copyright Year	1998
Abstract	We report on experiments in which we have used a DC SQUID with additional positive feedback (APF) in a broadband pulsed NMR spectrometer, of bandwidth 3.4 MHz, to observe directly the free precession of nuclear spins in bulk metallic samples. The sample is located inside a superconducting receiver coil, which forms a flux transformer with the input coil of the SQUID. The broadband response of the flux transformer, combined with the relatively large bandwidth of the APF SQUID when operated in flux-locked-loop mode, results in a short recovery time. This enables the study of solid-state samples with a short spin-spin relaxation time at frequencies below 1MHz, appropriate at millikelvin temperatures. A further advantage of this scheme is that the NMR frequency can be varied without changes in the detection electronics being necessary. The sensitivity of the DC SQUID detection system, compared with conventional NMR, allows the study of small single crystal samples. The decay of eddy currents following the transmitter pulse is governed by sample size, geometry and resistivity. Typical decay times of less than 10 us are expected on 0.5 mm diameter cylindrical samples. We discuss progress on experiments with aluminium wires at a temperature of 20 mK.
Starting Page	939
Ending Page	944
Page Count	6
File Format	PDF
ISSN	00222291
Journal	Journal of Low Temperature Physics
Volume Number	113
Issue Number	5-6
e-ISSN	15737357
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	1998-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Characterization and Evaluation Materials Condensed Matter Magnetism, Magnetic Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Materials Science

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

DC SQUID Spectrometers for NMR

Pulsed Nuclear Magnetic Resonance on $^{3}$He Adsorbed on Bare and $^{4}$He Preplated MCM-41 Using DC SQUID Detection

Effect of Voltage Bias on the dc SQUID Characteristics

Experiment on Nuclear Ordering and Superconductivity in Lithium

Characterization of the Input Noise Sources of a dc SQUID

Integrated niobium DC SQUID gradiometers for non-destructive evaluation and biomagnetism

NMR on Systems of Low Spin Density Using DC Squids

Ferromagnetism of 2D Solid $^{3}$He Investigated by SQUID NMR

Development of a heart monitoring system with high-T$_{c}$ DC-SQUID gradiometers

Broadband DC SQUID NMR Spectrometry on Bulk Metals

Similar Documents

DC SQUID Spectrometers for NMR

Pulsed Nuclear Magnetic Resonance on $^{3}$He Adsorbed on Bare and $^{4}$He Preplated MCM-41 Using DC SQUID Detection

Effect of Voltage Bias on the dc SQUID Characteristics

Experiment on Nuclear Ordering and Superconductivity in Lithium

Characterization of the Input Noise Sources of a dc SQUID

Integrated niobium DC SQUID gradiometers for non-destructive evaluation and biomagnetism

NMR on Systems of Low Spin Density Using DC Squids

Ferromagnetism of 2D Solid $^{3}$He Investigated by SQUID NMR

Development of a heart monitoring system with high-T$_{c}$ DC-SQUID gradiometers

Broadband DC SQUID NMR Spectrometry on Bulk Metals