Abstract
Two types of strong magnetic field generator have been newly constructed by using superconducting bulk magnets that mainly consist of rare earth 123 single domain compounds (REBa2Cu3Oy) in conjunction with different kinds of compact cryocoolers. The magnetic flux densities in the open space outside the vacuum chambers that contain bulk magnets have reached 3.37T and 2.78T when a Gifford-McMahon (GM) cryocooler and a Stirling-cycle (ST) pulse tube cryocooler cooled them to 30.8K and 62.0K, respectively. In this study, the activation of a bulk magnet was accomplished by field cooling magnetization using the static field of a 5T superconducting solenoid magnet. It was clarified that the trapped field distributions strongly reflect the temperature dependence of superconducting properties of the bulk magnet. The conditions for supplying intense fields in the open space are discussed to utilize them in practical applications. The most characteristic feature of superconducting bulk magnets is defined as a compact and strong magnetic field generator, which is discussed on the map from the industrial point of view.
| Original language | English |
|---|---|
| Pages (from-to) | 1233-1238 |
| Number of pages | 6 |
| Journal | Superconductor Science and Technology |
| Volume | 20 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2007 Dec 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Ceramics and Composites
- Condensed Matter Physics
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry
Cite this
Performances of compact magnetic field generators using cryo-cooled high temperature bulk superconductors as quasi-permanent magnets. / Oka, Tetsuo; Hirose, Y.; Kanayama, H.; Kikuchi, H.; Fukui, S.; Ogawa, J.; Sato, T.; Yamaguchi, M.
In: Superconductor Science and Technology, Vol. 20, No. 12, 01.12.2007, p. 1233-1238.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Performances of compact magnetic field generators using cryo-cooled high temperature bulk superconductors as quasi-permanent magnets
AU - Oka, Tetsuo
AU - Hirose, Y.
AU - Kanayama, H.
AU - Kikuchi, H.
AU - Fukui, S.
AU - Ogawa, J.
AU - Sato, T.
AU - Yamaguchi, M.
PY - 2007/12/1
Y1 - 2007/12/1
N2 - Two types of strong magnetic field generator have been newly constructed by using superconducting bulk magnets that mainly consist of rare earth 123 single domain compounds (REBa2Cu3Oy) in conjunction with different kinds of compact cryocoolers. The magnetic flux densities in the open space outside the vacuum chambers that contain bulk magnets have reached 3.37T and 2.78T when a Gifford-McMahon (GM) cryocooler and a Stirling-cycle (ST) pulse tube cryocooler cooled them to 30.8K and 62.0K, respectively. In this study, the activation of a bulk magnet was accomplished by field cooling magnetization using the static field of a 5T superconducting solenoid magnet. It was clarified that the trapped field distributions strongly reflect the temperature dependence of superconducting properties of the bulk magnet. The conditions for supplying intense fields in the open space are discussed to utilize them in practical applications. The most characteristic feature of superconducting bulk magnets is defined as a compact and strong magnetic field generator, which is discussed on the map from the industrial point of view.
AB - Two types of strong magnetic field generator have been newly constructed by using superconducting bulk magnets that mainly consist of rare earth 123 single domain compounds (REBa2Cu3Oy) in conjunction with different kinds of compact cryocoolers. The magnetic flux densities in the open space outside the vacuum chambers that contain bulk magnets have reached 3.37T and 2.78T when a Gifford-McMahon (GM) cryocooler and a Stirling-cycle (ST) pulse tube cryocooler cooled them to 30.8K and 62.0K, respectively. In this study, the activation of a bulk magnet was accomplished by field cooling magnetization using the static field of a 5T superconducting solenoid magnet. It was clarified that the trapped field distributions strongly reflect the temperature dependence of superconducting properties of the bulk magnet. The conditions for supplying intense fields in the open space are discussed to utilize them in practical applications. The most characteristic feature of superconducting bulk magnets is defined as a compact and strong magnetic field generator, which is discussed on the map from the industrial point of view.
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UR - http://www.scopus.com/inward/citedby.url?scp=36348954367&partnerID=8YFLogxK
U2 - 10.1088/0953-2048/20/12/025
DO - 10.1088/0953-2048/20/12/025
M3 - Article
VL - 20
SP - 1233
EP - 1238
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 12
ER -