Abstract
YBaCuO bulk superconductors prepared by the melt-powder-melt-growth process (MPMG) have a high critical current density. It has been found that non-superconducting Y2BaCuO5 (211) particles dispersed in the 123 superconducting phase can work as strong pinning centres, resulting in higher Jc values. Though 211 particles are considered to be the main pinning centres, defects such as twins and stacking faults are observed in melt-processed YBCO. In this study the effect of twin boundaries on the flux pinning was measured magnetically. The results indicate that twin planes contribute to flux pinning, but that their effect is not large in MPMG samples.
| Original language | English |
|---|---|
| Pages (from-to) | 954-958 |
| Number of pages | 5 |
| Journal | Cryogenics |
| Volume | 32 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1992 |
| Externally published | Yes |
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Keywords
- critical current density
- flux pinning
- YBCO
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Microstructures and critical currents in melt-processed YBCO. / Fujimoto, H.; Taguchi, T.; Murakami, Masato; Nakamura, N.; Koshizuka, N.
In: Cryogenics, Vol. 32, No. 11, 1992, p. 954-958.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microstructures and critical currents in melt-processed YBCO
AU - Fujimoto, H.
AU - Taguchi, T.
AU - Murakami, Masato
AU - Nakamura, N.
AU - Koshizuka, N.
PY - 1992
Y1 - 1992
N2 - YBaCuO bulk superconductors prepared by the melt-powder-melt-growth process (MPMG) have a high critical current density. It has been found that non-superconducting Y2BaCuO5 (211) particles dispersed in the 123 superconducting phase can work as strong pinning centres, resulting in higher Jc values. Though 211 particles are considered to be the main pinning centres, defects such as twins and stacking faults are observed in melt-processed YBCO. In this study the effect of twin boundaries on the flux pinning was measured magnetically. The results indicate that twin planes contribute to flux pinning, but that their effect is not large in MPMG samples.
AB - YBaCuO bulk superconductors prepared by the melt-powder-melt-growth process (MPMG) have a high critical current density. It has been found that non-superconducting Y2BaCuO5 (211) particles dispersed in the 123 superconducting phase can work as strong pinning centres, resulting in higher Jc values. Though 211 particles are considered to be the main pinning centres, defects such as twins and stacking faults are observed in melt-processed YBCO. In this study the effect of twin boundaries on the flux pinning was measured magnetically. The results indicate that twin planes contribute to flux pinning, but that their effect is not large in MPMG samples.
KW - critical current density
KW - flux pinning
KW - YBCO
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UR - http://www.scopus.com/inward/citedby.url?scp=0000490051&partnerID=8YFLogxK
U2 - 10.1016/0011-2275(92)90006-V
DO - 10.1016/0011-2275(92)90006-V
M3 - Article
VL - 32
SP - 954
EP - 958
JO - Cryogenics
JF - Cryogenics
SN - 0011-2275
IS - 11
ER -