Axial high-temperature superconducting-quantum-interference-device gradiometer composed of magnetometers with a monolithic feedback and compensation coil

Koichi Yokosawa; Hiroshi Oyama; Shinya Kuriki; Daisuke Suzuki; Keiji Tsukada

doi:10.1063/1.1369414

Axial high-temperature superconducting-quantum-interference-device gradiometer composed of magnetometers with a monolithic feedback and compensation coil

Koichi Yokosawa, Hiroshi Oyama, Shinya Kuriki, Daisuke Suzuki, Keiji Tsukada

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A first-order axial gradiometer has been constructed using two high-critical-temperature superconducting-quantum-interference-device magnetometers having a double-pickup loop configuration on bicrystal substrates. The magnetometer, which had a slot-type structure but no weak links on the pickup loops, can be operated steadily in an unshielded environment after in situ cooling. The gradiometer was formed by connecting the feedback and the compensation coils of the two magnetometers in series using a normal conductive wire. Sufficiently high noise reduction (31 dB at 1 Hz) was achieved without any need for adjustments and low-noise magnetocardiograms were obtained with the gradiometer in a moderately magnetically shielded room.

Original language	English
Pages (from-to)	2745-2747
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	18
DOIs	https://doi.org/10.1063/1.1369414
Publication status	Published - Apr 30 2001
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.1369414

Cite this

@article{499fc809dfa54a988279518bef2b4600,

title = "Axial high-temperature superconducting-quantum-interference-device gradiometer composed of magnetometers with a monolithic feedback and compensation coil",

abstract = "A first-order axial gradiometer has been constructed using two high-critical-temperature superconducting-quantum-interference-device magnetometers having a double-pickup loop configuration on bicrystal substrates. The magnetometer, which had a slot-type structure but no weak links on the pickup loops, can be operated steadily in an unshielded environment after in situ cooling. The gradiometer was formed by connecting the feedback and the compensation coils of the two magnetometers in series using a normal conductive wire. Sufficiently high noise reduction (31 dB at 1 Hz) was achieved without any need for adjustments and low-noise magnetocardiograms were obtained with the gradiometer in a moderately magnetically shielded room.",

author = "Koichi Yokosawa and Hiroshi Oyama and Shinya Kuriki and Daisuke Suzuki and Keiji Tsukada",

year = "2001",

month = apr,

day = "30",

doi = "10.1063/1.1369414",

language = "English",

volume = "78",

pages = "2745--2747",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "18",

}

TY - JOUR

T1 - Axial high-temperature superconducting-quantum-interference-device gradiometer composed of magnetometers with a monolithic feedback and compensation coil

AU - Yokosawa, Koichi

AU - Oyama, Hiroshi

AU - Kuriki, Shinya

AU - Suzuki, Daisuke

AU - Tsukada, Keiji

PY - 2001/4/30

Y1 - 2001/4/30

N2 - A first-order axial gradiometer has been constructed using two high-critical-temperature superconducting-quantum-interference-device magnetometers having a double-pickup loop configuration on bicrystal substrates. The magnetometer, which had a slot-type structure but no weak links on the pickup loops, can be operated steadily in an unshielded environment after in situ cooling. The gradiometer was formed by connecting the feedback and the compensation coils of the two magnetometers in series using a normal conductive wire. Sufficiently high noise reduction (31 dB at 1 Hz) was achieved without any need for adjustments and low-noise magnetocardiograms were obtained with the gradiometer in a moderately magnetically shielded room.

AB - A first-order axial gradiometer has been constructed using two high-critical-temperature superconducting-quantum-interference-device magnetometers having a double-pickup loop configuration on bicrystal substrates. The magnetometer, which had a slot-type structure but no weak links on the pickup loops, can be operated steadily in an unshielded environment after in situ cooling. The gradiometer was formed by connecting the feedback and the compensation coils of the two magnetometers in series using a normal conductive wire. Sufficiently high noise reduction (31 dB at 1 Hz) was achieved without any need for adjustments and low-noise magnetocardiograms were obtained with the gradiometer in a moderately magnetically shielded room.

UR - http://www.scopus.com/inward/record.url?scp=0035971780&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035971780&partnerID=8YFLogxK

U2 - 10.1063/1.1369414

DO - 10.1063/1.1369414

M3 - Article

AN - SCOPUS:0035971780

SN - 0003-6951

VL - 78

SP - 2745

EP - 2747

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

ER -

Axial high-temperature superconducting-quantum-interference-device gradiometer composed of magnetometers with a monolithic feedback and compensation coil

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this