Abstract
We studied spatial inhomogeneities of Gd-Ba-Cu-O bulk superconductors by using two different types of Hall probe scanning methods. One is a conventional scanning Hall probe (SHP) method, which can measure the trapped flux density distribution of superconductors after magnetized by external fields. The other is a recently developed magneto-scan method, which scans a Hall probe together with a permanent magnet and can detect shielding behavior of the sample surface without applying an external field. In the SHP method, the flux density distributions obtained by the field cooling (FC) scan were compared with those in the zero field cooling (ZFC) scan. It was found that the ZFC scan can acquire much more information on the sample inhomogeneity than the FC scan. The magneto-scan method was also adopted to the characterization of the same sample. It was found that this method was more sensitive than the SHP method, and allowed us to clearly detect some degradations in the vicinity of the seed crystal in the sample surface.
| Original language | English |
|---|---|
| Pages (from-to) | 3640-3643 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 15 |
| Issue number | 2 PART III |
| DOIs | |
| Publication status | Published - 2005 Jun |
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Keywords
- Gadolinium compounds
- Magnetic field measurement
- Magnetic variable measurement
- Superconducting materials measurements
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Physics and Astronomy (miscellaneous)
Cite this
Spatial inhomogeneities of Gd-Ba-Cu-O bulk superconductors evaluated by different Hall probe scanning methods. / Kono, Takeshi; Sakai, Naomichi; Nariki, Shinya; Hirabayashi, Izumi; Murakami, Masato; Koshizuka, Naoki.
In: IEEE Transactions on Applied Superconductivity, Vol. 15, No. 2 PART III, 06.2005, p. 3640-3643.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spatial inhomogeneities of Gd-Ba-Cu-O bulk superconductors evaluated by different Hall probe scanning methods
AU - Kono, Takeshi
AU - Sakai, Naomichi
AU - Nariki, Shinya
AU - Hirabayashi, Izumi
AU - Murakami, Masato
AU - Koshizuka, Naoki
PY - 2005/6
Y1 - 2005/6
N2 - We studied spatial inhomogeneities of Gd-Ba-Cu-O bulk superconductors by using two different types of Hall probe scanning methods. One is a conventional scanning Hall probe (SHP) method, which can measure the trapped flux density distribution of superconductors after magnetized by external fields. The other is a recently developed magneto-scan method, which scans a Hall probe together with a permanent magnet and can detect shielding behavior of the sample surface without applying an external field. In the SHP method, the flux density distributions obtained by the field cooling (FC) scan were compared with those in the zero field cooling (ZFC) scan. It was found that the ZFC scan can acquire much more information on the sample inhomogeneity than the FC scan. The magneto-scan method was also adopted to the characterization of the same sample. It was found that this method was more sensitive than the SHP method, and allowed us to clearly detect some degradations in the vicinity of the seed crystal in the sample surface.
AB - We studied spatial inhomogeneities of Gd-Ba-Cu-O bulk superconductors by using two different types of Hall probe scanning methods. One is a conventional scanning Hall probe (SHP) method, which can measure the trapped flux density distribution of superconductors after magnetized by external fields. The other is a recently developed magneto-scan method, which scans a Hall probe together with a permanent magnet and can detect shielding behavior of the sample surface without applying an external field. In the SHP method, the flux density distributions obtained by the field cooling (FC) scan were compared with those in the zero field cooling (ZFC) scan. It was found that the ZFC scan can acquire much more information on the sample inhomogeneity than the FC scan. The magneto-scan method was also adopted to the characterization of the same sample. It was found that this method was more sensitive than the SHP method, and allowed us to clearly detect some degradations in the vicinity of the seed crystal in the sample surface.
KW - Gadolinium compounds
KW - Magnetic field measurement
KW - Magnetic variable measurement
KW - Superconducting materials measurements
UR - http://www.scopus.com/inward/record.url?scp=22044440472&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=22044440472&partnerID=8YFLogxK
U2 - 10.1109/TASC.2005.849379
DO - 10.1109/TASC.2005.849379
M3 - Article
AN - SCOPUS:22044440472
VL - 15
SP - 3640
EP - 3643
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 2 PART III
ER -