Measurements of magnetic fields and levitation forces of bulk superconductors

N. Yamachi; T. Nishikawa; K. Sawa; M. Murakami

doi:10.1109/TASC.2003.812421

Measurements of magnetic fields and levitation forces of bulk superconductors

N. Yamachi, T. Nishikawa, K. Sawa, M. Murakami

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

We have measured the magnetic field and the levitation force of a bulk Y-Ba-Cu-O superconductor in varying the external field with a Bi-Sr-Ca-Cu-O superconducting magnet. The height dependence of the levitation force could well be explained in terms of the field gradient in the sample and the radial component of the external magnetic field. The field gradient also induces the trapped field and decreases the levitation force. The experimental data showed a deviation from the theoretical value when the levitation process was repeated.

Original language	English
Pages (from-to)	3651-3654
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2 III
DOIs	https://doi.org/10.1109/TASC.2003.812421
Publication status	Published - 2003 Jun 1
Externally published	Yes
Event	2002 Applied Superconductivity Conference - Houston, TX, United States Duration: 2002 Aug 4 → 2002 Aug 9

Keywords

External field
Levitation force
Magnetic field distribution
YBCO bulk

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Measurements of magnetic fields and levitation forces of bulk superconductors",

abstract = "We have measured the magnetic field and the levitation force of a bulk Y-Ba-Cu-O superconductor in varying the external field with a Bi-Sr-Ca-Cu-O superconducting magnet. The height dependence of the levitation force could well be explained in terms of the field gradient in the sample and the radial component of the external magnetic field. The field gradient also induces the trapped field and decreases the levitation force. The experimental data showed a deviation from the theoretical value when the levitation process was repeated.",

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author = "N. Yamachi and T. Nishikawa and K. Sawa and M. Murakami",

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T1 - Measurements of magnetic fields and levitation forces of bulk superconductors

AU - Yamachi, N.

AU - Nishikawa, T.

AU - Sawa, K.

AU - Murakami, M.

PY - 2003/6/1

Y1 - 2003/6/1

N2 - We have measured the magnetic field and the levitation force of a bulk Y-Ba-Cu-O superconductor in varying the external field with a Bi-Sr-Ca-Cu-O superconducting magnet. The height dependence of the levitation force could well be explained in terms of the field gradient in the sample and the radial component of the external magnetic field. The field gradient also induces the trapped field and decreases the levitation force. The experimental data showed a deviation from the theoretical value when the levitation process was repeated.

AB - We have measured the magnetic field and the levitation force of a bulk Y-Ba-Cu-O superconductor in varying the external field with a Bi-Sr-Ca-Cu-O superconducting magnet. The height dependence of the levitation force could well be explained in terms of the field gradient in the sample and the radial component of the external magnetic field. The field gradient also induces the trapped field and decreases the levitation force. The experimental data showed a deviation from the theoretical value when the levitation process was repeated.

KW - External field

KW - Levitation force

KW - Magnetic field distribution

KW - YBCO bulk

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

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