SQUID magnetometer operating at 37K based on nanobridges in epitaxial MgB2 thin films

D. Mijatovic, Alexander Brinkman, Dick Veldhuis, Johannes W.M. Hilgenkamp, Horst Rogalla, Augustinus J.H.M. Rijnders, David H.A. Blank, A.V. Pogrebnyakov, J.M. Redwing, S.Y. Xu, Q Li, X.X. Xi

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Superconducting quantum interference devices SQUIDs and magnetometers are fabricated from nanoconstrictions in epitaxial MgB2 films. The nanobridges are contained within single-crystalline grains, resulting in clean transport, a large critical current density of 5107 A/cm2 at 4.2 K, and stable SQUID voltage modulation up to 38.8 K. The magnetometer is realized with an inductively coupled pickup loop, giving rise to a field sensitivity of 1 pT Hz¿1/2 down to 1 Hz. The device properties are governed by the two-band superconducting nature of MgB2, posing, however, no problems to a successful development of boride magnetic field sensing devices. The MgB2 zero-temperature London penetration depth is measured to be 62 nm, close to theoretical predictions.
Original languageUndefined
Pages (from-to)192505
Number of pages3
JournalApplied physics letters
Volume87
Issue number192505
DOIs
Publication statusPublished - 2005

Keywords

  • EWI-19272
  • IR-55176
  • METIS-230356

Cite this

@article{d2f9923cc8794362886f128e9800971c,
title = "SQUID magnetometer operating at 37K based on nanobridges in epitaxial MgB2 thin films",
abstract = "Superconducting quantum interference devices SQUIDs and magnetometers are fabricated from nanoconstrictions in epitaxial MgB2 films. The nanobridges are contained within single-crystalline grains, resulting in clean transport, a large critical current density of 5107 A/cm2 at 4.2 K, and stable SQUID voltage modulation up to 38.8 K. The magnetometer is realized with an inductively coupled pickup loop, giving rise to a field sensitivity of 1 pT Hz¿1/2 down to 1 Hz. The device properties are governed by the two-band superconducting nature of MgB2, posing, however, no problems to a successful development of boride magnetic field sensing devices. The MgB2 zero-temperature London penetration depth is measured to be 62 nm, close to theoretical predictions.",
keywords = "EWI-19272, IR-55176, METIS-230356",
author = "D. Mijatovic and Alexander Brinkman and Dick Veldhuis and Hilgenkamp, {Johannes W.M.} and Horst Rogalla and Rijnders, {Augustinus J.H.M.} and Blank, {David H.A.} and A.V. Pogrebnyakov and J.M. Redwing and S.Y. Xu and Q Li and X.X. Xi",
note = "This work is supported by the Netherlands Organization for Scienti{\"i}¬�c Research NWO and the Dutch Foundation for Research on Matter FOM, and is part of the MESA Strategic Orientation on Materials Science of Interfaces. The work at Penn State is supported in part by ONR under Grant Nos. N00014-00-1-0294 X.X.X. and N0014-01-1-0006 J.M.R., and by NSF under Grant Nos. DMR-0306746 X.X.X. and J.M.R., and DMR-0405502 Q.L.",
year = "2005",
doi = "10.1063/1.2128482",
language = "Undefined",
volume = "87",
pages = "192505",
journal = "Applied physics letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "192505",

}

SQUID magnetometer operating at 37K based on nanobridges in epitaxial MgB2 thin films. / Mijatovic, D.; Brinkman, Alexander; Veldhuis, Dick; Hilgenkamp, Johannes W.M.; Rogalla, Horst; Rijnders, Augustinus J.H.M.; Blank, David H.A.; Pogrebnyakov, A.V.; Redwing, J.M.; Xu, S.Y.; Li, Q; Xi, X.X.

In: Applied physics letters, Vol. 87, No. 192505, 2005, p. 192505.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - SQUID magnetometer operating at 37K based on nanobridges in epitaxial MgB2 thin films

AU - Mijatovic, D.

AU - Brinkman, Alexander

AU - Veldhuis, Dick

AU - Hilgenkamp, Johannes W.M.

AU - Rogalla, Horst

AU - Rijnders, Augustinus J.H.M.

AU - Blank, David H.A.

AU - Pogrebnyakov, A.V.

AU - Redwing, J.M.

AU - Xu, S.Y.

AU - Li, Q

AU - Xi, X.X.

N1 - This work is supported by the Netherlands Organization for Scienti�c Research NWO and the Dutch Foundation for Research on Matter FOM, and is part of the MESA Strategic Orientation on Materials Science of Interfaces. The work at Penn State is supported in part by ONR under Grant Nos. N00014-00-1-0294 X.X.X. and N0014-01-1-0006 J.M.R., and by NSF under Grant Nos. DMR-0306746 X.X.X. and J.M.R., and DMR-0405502 Q.L.

PY - 2005

Y1 - 2005

N2 - Superconducting quantum interference devices SQUIDs and magnetometers are fabricated from nanoconstrictions in epitaxial MgB2 films. The nanobridges are contained within single-crystalline grains, resulting in clean transport, a large critical current density of 5107 A/cm2 at 4.2 K, and stable SQUID voltage modulation up to 38.8 K. The magnetometer is realized with an inductively coupled pickup loop, giving rise to a field sensitivity of 1 pT Hz¿1/2 down to 1 Hz. The device properties are governed by the two-band superconducting nature of MgB2, posing, however, no problems to a successful development of boride magnetic field sensing devices. The MgB2 zero-temperature London penetration depth is measured to be 62 nm, close to theoretical predictions.

AB - Superconducting quantum interference devices SQUIDs and magnetometers are fabricated from nanoconstrictions in epitaxial MgB2 films. The nanobridges are contained within single-crystalline grains, resulting in clean transport, a large critical current density of 5107 A/cm2 at 4.2 K, and stable SQUID voltage modulation up to 38.8 K. The magnetometer is realized with an inductively coupled pickup loop, giving rise to a field sensitivity of 1 pT Hz¿1/2 down to 1 Hz. The device properties are governed by the two-band superconducting nature of MgB2, posing, however, no problems to a successful development of boride magnetic field sensing devices. The MgB2 zero-temperature London penetration depth is measured to be 62 nm, close to theoretical predictions.

KW - EWI-19272

KW - IR-55176

KW - METIS-230356

U2 - 10.1063/1.2128482

DO - 10.1063/1.2128482

M3 - Article

VL - 87

SP - 192505

JO - Applied physics letters

JF - Applied physics letters

SN - 0003-6951

IS - 192505

ER -